Showing posts with label Space. Show all posts
Showing posts with label Space. Show all posts

Friday, June 21, 2024

Comment of the day

 

From reader HistoryPerson, commenting on a CNN report about the Boeing Starliner crew capsule, currently docked with the International Space Station pending resolution of several issues with its thrusters and other components:


How many Boeing people does it take to change a light bulb? The answer is unknown because nobody at Boeing knows how to change a light bulb.


Considering how much trouble the Boeing 737 Max airliner program is in, that might be all too appropriate . . .  Remember when Boeing blazed the trail that all other aircraft manufacturers followed?  How are the mighty fallen!

Peter


Saturday, December 16, 2023

Saturday Snippet: A diplomatic landing

 

David Drake, well-known science fiction and fantasy author, died a week ago.  He's been one of the giants in his genre for decades, and he'll be greatly missed.  In his honor, and because it's one of my favorites among his books, here's the opening chapter of "With The Lightnings", the first of the books in his space opera RCN Series (Republic of Cinnabar Navy).



The blurb reads:


A Friendship Forged in Hell!

Daniel Leary is a lieutenant in the Republic of Cinnabar Navy with no money and no prospects since he quarreled with his ruthless, politically powerful father.

Adele Mundy is a scholar with no money and no prospects since her family was massacred for conspiring against the Government of Cinnabar.

Kostroma is a wealthy planet which depends on diplomacy to stay independent in a galaxy whose two great powers, Cinnabar and the Alliance, battle for supremacy.

In a few hours, diplomacy is going to fail Kostroma. Daniel, Adele, and the scratch crew they gather aren't much to stand in the way of a powerful invasion fleet, but just possibly they're enough.

Men and women who hold courage cheap and honor more dear than life itself face impossible odds in a novel of color, intrigue and slashing action. From the corridors of a treason-ridden palace through the perils of unknown seas and hellish jungles to a final blazlng climax in space, the heroes never bow and the action never flags.

They have nothing on their side but each other—and heaven help whatever tries to stand in their way!


Here's how it begins.


Lieutenant Daniel Leary ambled through the streets of Kostroma City in the black-piped gray 2nd Class uniform of the Republic of Cinnabar Navy. He was on his way to the Elector's Palace, but there was no hurry and really nothing more important for Daniel to do than to savor the fact that he'd realized one of his childhood dreams: to walk a far world and see its wonders first hand.

His other dream, to command a starship himself, would come (if at all) in the far future; a future as distant in Daniel's mind as childhood seemed from his present age of twenty-two Terran years.

For now, he had Kostroma and that was wonder enough. He whistled a snatch of a tune the band had played at the supper club he'd visited the night before.

Daniel smiled, an expression so naturally warm that strangers on the street smiled back at him. The Kostroman lady he'd met there was named Silena. The honor both of a Leary of Bantry and the RCN required that Daniel offer his help when the lady's young escort drank himself into babbling incapacity. Silena had been very appreciative; and after the first few minutes back at her lodgings, pique at her original escort was no longer her primary focus.

Daniel was only a little above average height with a tendency toward fleshiness that showed itself particularly in his florid face. His roundness and open expression caused strangers sometimes to dismiss Daniel Leary as soft. That was a mistake.

A canal ran down the center of the broad street. During daylight it carried only small craft, water taxis and light delivery vehicles, but at night barges loaded with construction materials edged between the stone banks with loud arguments over right-of-way. The pavements to either side seethed with a mixture of pedestrians and three-wheeled motorized jitneys, though like the canals they would fill with heavy traffic after dark.

The Kostroman economy was booming on the profits of interstellar trade, and much of that wealth was being invested here in the capital. Rich merchants built townhouses, and the older nobility added to the palaces of their clans so as not to be outdone.

Folk at a lower social level—clerks in the trading houses, the spacers who crewed Kostroma's trading fleet, and the laborers staffing the factories and fisheries that filled those starships, all had gained in some degree. They wanted improved lodgings as well, and they were willing to pay for them.

Daniel walked along whistling, delighted with the pageant. People wore colorful clothing in unfamiliar styles. Many of them chattered in local dialects: Kostroma was a watery planet from whose islands had sprung a hundred distinct tongues during the long Hiatus in star travel. Even those speaking Universal, now the common language of the planet as well as that of interstellar trade, did so in an accent strange to Cinnabar ears.

Civilization hadn't vanished on Kostroma as it had on so many worlds colonized during the first period of human star travel, but Kostroman society had fragmented without the lure of the stars to unify it. The centuries since Kostroma returned to space hadn't fully healed the social fabric: the present Elector, Walter III of the Hajas clan, had seized power in a coup only six months before.

Nobody doubted that Walter intended to retain Kostroma's traditional friendship with the Republic of Cinnabar, but the new Elector needed money. At the present state of the war between Cinnabar and the Alliance of Free Stars, Walter's hint that he might not renew the Reciprocity Agreement when it came due in three months had been enough to bring a high-level delegation from Cinnabar.

Daniel sighed. A high-level delegation, with one junior lieutenant thrown in as a makeweight. Daniel had almost certainly been sent because he was the son of the politically powerful Corder Leary, former Speaker of the Cinnabar Senate. Daniel's—bad—relationship with his father was no secret in the RCN, but the ins and outs of Cinnabar families wouldn't be common knowledge on Kostroma.

A man came out of a doorway, pushing himself onto the crowded pavement while calling final instructions to someone within the building. Daniel would have avoided the fellow if there'd been room. There wasn't, so he set his shoulder instead and it was the larger Kostroman who bounced back with a surprised grunt.

No one took notice of what was merely a normal hazard of city life. Daniel walked on, eyeing with interest the carven swags and volutes that decorated unpretentious four-story apartment buildings.

Kostromans didn't duel the way members of Cinnabar's wealthy families sometimes did. On the other hand, feuds and assassinations were accepted features of Kostroman social life. Daniel supposed it was whatever you were used to.

In Xenos, Cinnabar's capital, real magnates like Corder Leary moved through the streets with an entourage of fifty or more clients, some of whom might be senators themselves. You stepped aside or the liveried toughs leading the procession knocked you aside. The free citizens of the galaxy's proudest republic accepted—indeed, expected—that their leaders would behave in such fashion. Who would obey a man who lacked a strong sense of his own honor?

Birds fluted as they spun in tight curves from roof coping to roof coping overhead. They were avian in the same sense as the scaly "birds" of Cinnabar, the winged amphibians of Sadastor, or the flyers of a thousand other worlds that humans had visited and described. The details were for scientists to chart and for quick-eyed amateurs like Daniel Leary to notice with delight.

During the final quarrel Daniel had said he'd take nothing from his father; but the Leary name had brought Daniel to Kostroma. Well, the name was his by right, not his father's gift. Daniel didn't have a shipboard appointment, and he really had no duties even as part of Admiral Dame Martina Lasowski's delegation; but he'd reached the stars.

The Kostroman navy was small compared to the fleets of Cinnabar and the Alliance, and even so it was larger than it was efficient. Kostroma's captains and sailors were of excellent quality, but the merchant fleet took the greater—and the better—part of the personnel. Ratings in the Kostroman navy were largely foreigners; officers were generally men who preferred the high life in Kostroma City to hard voyaging; and the ships spent most of their time laid up with their ports sealed and their movable equipment warehoused, floating in a dammed lagoon south of the capital called the Navy Pool.

A starship was landing in the Floating Harbor. Daniel turned to watch, sliding the naval goggles down from his cap brim against the glare.

Starships took off and landed on water both because of the damage their plasma motors would do to solid ground and because water was an ideal reaction mass to be converted to plasma. Once out of a planet's atmosphere, ships used their High Drive, a matter/antimatter conversion process and far more efficient, but to switch to High Drive too early was to court disaster.

At one time Kostroma Harbor had served all traffic, but for the past generation only surface vessels used the city wharfs. The Floating Harbor built of hollow concrete pontoons accommodated the starships a half-mile offshore.

The pontoons were joined in hexagons that damped the waves generated by takeoffs and landings, isolating individual ships like larvae in the cells of a beehive. Seagoing lighters docked on the outer sides of the floats to deliver and receive cargo.

The ship landing just now was a small one of three hundred tons or so; a yacht, or more probably a government dispatch vessel. The masts folded along the hull indicated the plane on which Cassini Radiation drove the ship through sponge space was very large compared to the vessel's displacement.

The hull shape and the way two of the four High Drive nozzles were mounted on outriggers identified the ship as a product of the Pleasaunce system, the capital of the deceptively named Alliance of Free Stars. That was perfectly proper since the vessel was unarmed. Kostroma was neutral, trading with both parties to the conflict.

Kostroma's real value to combatants lay not with her navy but in her merchant fleet and extensive trading network to regions of the human diaspora where neither Cinnabar nor the Alliance had significant direct contact. Formally the Reciprocity Agreement granted Cinnabar only the right to land warships on Kostroma instead of staying ten light-minutes out like those of other nations.

As a matter of unofficial policy, however, neutral Kostroman vessels carried cargoes to Cinnabar but not to worlds of the Alliance. That was an advantage for which General Porra, Guarantor of the Alliance, would have given his left nut.

The dispatch vessel touched down in a vast gout of steam; the roar of landing arrived several seconds later as the cloud was already beginning to dissipate. Daniel raised his goggles and continued walking. A graceful bridge humped over a major canal; from the top of the arch Daniel glimpsed the roof of the Elector's Palace.

An Alliance dispatch vessel might mean Porra or his bureaucrats believed there was a realistic chance of detaching Kostroma from Cinnabar. Alternatively, the Alliance could simply be trying to raise the price Admiral Lasowski would finally agree to pay. Walter III would have invited an Alliance delegation as a bargaining chip even if Porra hadn't planned to send one on his own account.

Well, that was only technically a concern for Lt. Daniel Leary. As a practical matter, he was a tourist visiting a planet which provided a range of unfamiliar culture, architecture, and wildlife.

Whistling again, he strolled off the bridge and along the broad avenue leading toward the palace.


The series continues through thirteen volumes.  It's one of my favorite space opera sagas.

Peter


Thursday, November 30, 2023

Interesting: electronic warfare hides ground activity from satellites

 

Hans G. Schantz has published a report on Gab illustrating how Russia is trying to jam electronic satellite surveillance of part of its territory.  He writes:


And so on the 24th, the European satellite Sentinel-1 tried to take an image of Sevastopol in the radar range - only then a surprise awaited it.

The Sentinel is equipped with a radar that allows it to form an image of the earth's surface even in conditions of interference. This radar operates at a frequency of 5.405 GHz. Accordingly, any radiation (primarily from military radars) at close frequencies creates interference for the satellite radar.

(Click the image for a larger view)

But in the photo it is clearly not interference from the operation of one or more radars, but the result of the operation of an electronic warfare complex, jamming the radar frequency with counter interference over a huge area.


There's more at the link.

I've had some involvement with electronic warfare (EW) in the past (in a much more primitive form, and now decades out of date).  I've known about EW directed against satellites themselves (the Chinese are pretty far advanced in that field, and although the USA isn't talking about its technology I presume it's at a similar level), but I wasn't aware that EW had advanced to the point where it can "blanket" a ground area (rather than a specific pinpoint target) against space-based electronic surveillance like that.

Since today's satellites use digital electronics rather than film photography or analog technology, such anti-satellite-surveillance EW might render them a lot less useful.  If any readers can point us in the direction of more information (without, of course, compromising its or their security classification), please do so in Comments.  Thanks!

Peter


Monday, December 26, 2022

A very Christmassy image from the stars

 

The Bible tells us:  "The heavens declare the glory of God;  And the firmament shows His handiwork."  When one looks at this image, courtesy of the Webb space telescope, of the Cartwheel Galaxy, I can only nod slowly in awed agreement.  Click the image for a much larger view.



How's that for a star to top the cosmic Christmas tree?

Peter


Thursday, October 20, 2022

Wow! The Webb space telescope images the Pillars of Creation

 

Courtesy of the BBC, here's a wonderful image of the Pillars of Creation in the Serpens constellation, taken by the Webb space telescope.  Click either image for a much larger view.



And here's a comparison between the Hubble space telescope's view of the Pillars (on the left) and the Webb's greatly improved and much sharper view (on the right).



From the report:


Webb, with its infrared detectors, is able to see past much of the light-scattering effects of the pillars' dust to examine the activity of the new-born suns.

"I've been studying the Eagle Nebula since the mid-1990s, trying to see 'inside' the light-years long pillars that Hubble showed, searching for young stars inside them. I always knew that when James Webb took pictures of it, they would be stunning. And so they are," Prof Mark McCaughrean, the Senior Advisor for Science at the European Space Agency, told BBC News.

The M16's pillars are being illuminated and sculpted by the intense ultraviolet light from massive nearby stars. That radiation is also dismantling the towers.

Indeed, if you could magically transport yourself to this location today, the pillars are very probably no longer there.

We only see them because we're looking at them in the past. The light that Webb detects has taken 6,500 years to reach its mirrors.


There's more at the link.

Seeing wonderful images like that reminds me of how very, very small and insignificant humankind is, in comparison to the vastness of the universe.

Peter


Wednesday, September 7, 2022

Is NASA's Space Launch System doomed because of obsolete components?

 

The Silicon Graybeard argues that they're a major factor in the problems the SLS is currently experiencing - particularly in the prototype's fuel system.


The persistent issues that have been arising with trying to fuel Artemis I for its maiden flight are drawing attention to an awkward conclusion.  Either the contractors for Artemis and whoever is running Mission Control forgot how to work with liquid hydrogen or everyone who knew how to do it has retired or otherwise left the business.  There's a simple root cause, though, embedded in the joke that the SLS is "the Shuttles' Leftover S***."  The Shuttle program had trouble with liquid H2 as well and since the SLS program is reusing the Space Shuttle Main Engines, they have to use Hydrogen and Oxygen just like the Shuttles did.

. . .

If hydrogen is so hard to work with and hard to handle compared to kerosene (RP-1) or methane, why use it?  Back to the first paragraph: when congress allocated funds to start the program they mandated the use of the Shuttle hardware.  At this point, it might add some perspective to consider much of the Shuttle hardware was designed around 45 years ago.

. . .

Last Saturday's countdown - cancelled when the hydrogen tank was 11% filled - was the sixth time they've attempted to fuel this launch vehicle; it's tempting to call these tests a WDR (wet dress rehearsal) but I don't think they really accomplished enough to deserve that name.

How much do you want to bet that the seventh time will be the charm?


There's more at the link.  It makes very interesting reading, particularly for aviation and spaceflight buffs.

I wasn't aware that the SLS program was mandated to use old, surplus Space Shuttle hardware.  That makes no sense to me at all.  If those components were designed back in the 1970's, when the Space Shuttle was conceived, why would we not replace them with more modern hardware designed in the 2000's, with all the improvements we've been able to come up with during the intervening decades?

I guess we can blame the politicians.  They wanted to look good to their constituents by "saving money", so they voted to reuse old, obsolete technology.  (For that matter, NASA may have included Shuttle technology in their proposal precisely because they knew that "saving money" would be popular with those who vote to fund the agency.)

I suppose it's like the old joke tells us:  "A camel is a horse, designed by a committee."  (Comprised of politicians and bureaucrats!)



Peter


Thursday, July 28, 2022

Whackadoodle, much? Florida Man strikes again!

 

I had to laugh at this report.


A Florida man has been arrested after he was accused of stealing a pickup truck and driving to a Space Force base to warn the government about extraterrestrial and mythical creatures.

Corey Johnson, 29, was arrested Friday at Patrick Space Force Base by local deputies after he "attempted to get on base," according to an arrest citation.

Johnson reportedly explained to authorities "he was told by the president" to warn "the government there was US aliens fighting with Chinese dragons."

Johnson allegedly took control of a Ford F-150 several days prior to arriving at Patrick Space Force Base and he didn't know who the owner was, according to local authorities. He was charged with grand theft of a motor vehicle.

He told authorities the president had also instructed him to take the truck.


There's more at the link.

You just knew this had to be Florida, right?  Florida Man strikes again!

I wonder what the "Guardians" thought about that particular call to action?  I have visions of a miscreant E-4 being ordered by a senior NCO to prepare to interrupt warring dragons and aliens.  "Er... I don't see that listed in my job description, Staff Sergeant. How's about you show me how it's done?  I'll make the popcorn!"



Peter


Friday, March 11, 2022

Doofus Of The Day #1,089

 

Today's award goes to a group of rather… weirdGerman feminists with an interest in space.


A German feminist art group has revealed a vulva-shaped spaceship concept, which it is encouraging the European Space Agency to help realise in order to better represent humanity in space and "restore gender equality to the cosmos."

The group Wer Braucht Feminismus? (WBF?), which translates to "Who Needs Feminism?", created the Vulva Spaceship concept to challenge the convention of phallic spacecraft design.

. . .

"The project adds another dimension to the representation of humanity in space and is communicating to the world that anyone has a place in the universe, regardless of their genitalia," said the organisation.


There's more at the link.

They've even gone so far as to produce a video to publicize their concept.




Frankly, I never thought that the design of a rocket had anything to do with genitalia.  I'd always figured it had to do with aerodynamic efficiency, to penetrate the atmosphere rather than anything made of flesh - but, clearly, what do I know?

On the other hand, I'd love to know how the vulva spaceship will cope with re-entry…



Peter


Thursday, June 17, 2021

Heh

 

Yesterday's XKCD cartoon made me laugh.  Click the image to be taken to a larger version at its Web page (and don't forget to move your cursor over the image there to see the mouseover text).



I suspect a lot of contact between civilizations has been along those lines, on Earth as much as in interstellar or intergalactic terms.  Just think of the number of countries and cultures that considered themselves superior, or advanced, only to be discovered by others who found them the exact opposite - perhaps because the new arrivals were so conditioned to think themselves superior that they couldn't see the achievements of those they'd "discovered".  How often do we do likewise, in terms of assuming that our outlook on anything - political, social, economic, cultural, whatever - is necessarily superior to others' perspectives?  (The cultural and economic clashes in China between East and West during the 19th century, epitomized by the "Opium Wars" and the "Unequal Treaties", come to mind, as does the colonization of just about any country you care to name.)

An amusing cartoon, but also a sobering thought.

Peter


Saturday, May 15, 2021

Saturday Snippet: Surfboarding down to Mars

 

John Varley is a well-known science fiction author, with many books to his credit.  I like the way he uses his imagination to conjure up scenarios for his novels.  In "Red Lightning", second in the four-volume "The Thunder and Lightning" series, he has his teenaged protagonist surfing the atmosphere of Mars (such as it is) on his way from one of the planet's moons, Phobos, to his home below.



Here's how it goes.


No question about it, one of the things that doesn’t suck about Mars is airboards. And it may be the one thing Earthie kids my age envy us. You can’t use them on Earth—please!—and to use one on Mars you have to be a Martian. In fact, if a lot of Martian parents had their way, nobody would be able to use them at all. Hence the computer beeping at me, and less obvious safety measures.

We call them boards to be cool, to fit in with surfboards, which we obviously can’t use on Mars, and skateboards, which we can and do use, and are able to do tricks nobody could even think of on Earth.

What they actually look like is a snowmobile or a Jet Ski, sitting on a longer, wider surfboard. You straddle the engine and air tanks, sitting on a motorcycle seat, and there’s a clear Nomex aerodynamic shield in front of you, but other than that, you’re in open space, nothing but your suit to protect you from vacuum.

I fired the jets for the last time as I felt the very thin atmosphere begin to tug slightly on my board. Below me, Mars was spread out like a giant plate of lasagna. Sorry, but that’s really the best analogy I can come up with. Orange tomato sauce and cream-colored pasta, with a few smears of black olive here and there. The only things that didn’t fit the picture were the single, monumental peak of Olympus Mons and the perfect row of Ascraeus, Pavonis, and Arsia Mons east of the big boy. All four gigantic extinct volcanoes showed white caps of frozen water and carbon-dioxide ice.

I checked all my helmet displays, and everything was co-pacetic. Airboarding is fun, but you don’t want to forget that you can reach some serious high temperatures on the way in, and that you’ve got a reentry footprint you don’t dare ignore. Too high and you’re okay, you’ll skip out and have to try it again, a long way from your target, and endure the merciless ridicule of all the people you know when you get down. Too low, and you can toe right into the soup, decelerate at a killing rate, and fry. Falling off your board on Mars is not an option.

You do have to do a little skipping, but the best way to kill your velocity is slaloming. You have handlebars on the front, and of course you’re strapped down tight, so you hang on and shift your body left and right, maybe hang five, which means putting one foot out into the airstream for a few moments. Wear your heavy boots for that one.

I swooshed left, toward Olympus, traveled for a while almost parallel to the triple peaks, which might have been put there by the god Ares as a flight path indicator. When you get over Pavonis, it’s time to jog right again.

The gee forces were building up, shoving me down into the seat, and a faint ghost of a shock wave was curling over the top of the windshield and buffeting my helmet. That air was cold when it hit the windshield, and pretty hot when it left. The clear material began to glow light pink.

I was getting to the hottest part of the trip, pulling about a gee, which was easy. I dug a little deeper into the air and pulled a bit more. Then I started getting a little blue color in the air. That was a very tiny bit of the ablative coating of the board bottom burning off. About every fifth or sixth trip you had to spray some more on it, sort of like recapping a bald tire on Earth. But you could mix in some chemical compounds that didn’t have anything to do with slowing you down, like strontium or lithium salts for red, barium chloride for green, strontium and copper for purple, magnesium or aluminum for intense white. Same stuff you use in fireworks. Not a lot of it, and the resulting firetail is not as spectacular as a Landing Day display, but it’ll do.

If you’ve got bubble-drive power, you can theoretically start off at any time of day for any destination, and the same on your return. But it can take a long time, even accelerating all the way. The most practical thing is to take off for Phobos during a launch window that lasts about an hour, and when you return there’s an ideal time to leave to get to Thunder City—which is just about the only place worth going on Mars.

That means that a lot of people were reentering at the same time I was. Off to each side of me I could see multicolored flame trails as other boarders showed their stuff. As usual, there were varying degrees of skill. I watched as much as I could while still keeping my eyes on all the telltales and keeping my feel for the board. To my left I saw a board getting a little too close. I saw on the display that I was about half a mile ahead of him, which by the rules of the air gave me the right of way. He kept coming, and I got a yellow light on the heads-up. Jerk. I punched the console and a yellow flare arched out in his direction. In about a second he saw it and banked away from me. A window popped up on my display and I saw a kid about fifteen years old, his face distorted by the gee forces he was pulling.

“Sorry, space,” he said.

“Stay cool,” I said, which he could take any way he wanted.

Below, about fifteen thousand feet, I saw Thunder City, and I banked again and went into a long, altitude-killing turn. Looking out to the side, I got a wonderful view of what had been my hometown since I was five.

My, how it had grown.

When my family arrived the first hotel on the planet, the Marineris Hyatt, which my father was to manage, was still under construction. People were still new at this, at constructing buildings in an environment as hostile as Mars. The hotel was finished almost a year behind schedule. But it was full on opening day, and Earthies were clamoring for more rooms. So we built them.

Now you could hardly find the original Hyatt, which had come within a hair of being torn down before my mother and some others led a campaign to save it as our first historical building. It was converted into our first, and so far only, museum. Next to it was the Red Thunder, which Dad now ran, and where I had lived for the last five years. It was still the tallest and most impressive freestanding building in Thunder City, but wouldn’t be for long. I could see three new hotels in the works, all of which would be bigger.

The city was built in an irregular line, which had grown to about seven miles. There were a lot of domes, both geodesic and inflatable, the biggest being a Bucky dome almost a mile in diameter. It was all connected by the Grand Concourse, of which an architectural critic had said, “It represents the apotheosis of the turn-of-the-century airport waiting room.” Yeah, well. We can’t have open-air promenades with old elm trees on Mars. So most of the trees on the concourse are concrete, with plastic leaves. It’s all roofed with clear Lexan, and maybe it’s tacky, and maybe it is nothing but a giant shopping mall, but it’s home to me.

The slightly zigzag line of the concourse pointed toward the Valles Marineris, five miles away. There was one hotel out there, on the edge, and I swung over the Valles as I deployed my composite fabric wings to complete my deceleration. Like the old Space Shuttle, the board wasn’t capable of anything but a downward glide with those wings, but if you were good and had a head wind and maybe a thermal, you could stretch that glide pretty far. I went out over the edges of the Valles, which is just a fancy word for canyon. The Grand Canyon of Mars, so big that it would stretch from New York City to Los Angeles. You could lose whole states in some of the side canyons. I felt a little lift from the rising, thin, warm air. When I say warm, I mean a few degrees below zero. That’s balmy on Mars. But I didn’t linger. I banked again and soon was down to three thousand feet over my hometown.


I'd never have thought of combining a surfboard with atmospheric re-entry, but I suppose it's logical, if you think of "conventional" re-entry maneuvers currently used by spacecraft.  They don't so much "surf" as skip off the upper edge of the atmosphere to lose velocity (or accomplish the same thing by firing retro-rockets) before slanting down on a long, angled re-entry trajectory.

That's a nice piece of imaginative writing, IMHO.

Peter


Wednesday, April 7, 2021

We may be standing on part of another planet

 

I was a bit mind-boggled to read this article.


Scientists seeking to explain a series of seemingly inexplicable formations deep within the Earth’s surface may have found an explanation: They came from outer space.

Researchers with Arizona State University’s School of Earth and Space Exploration said in a recently published paper that the “continent-sized Large Low Shear Velocity provinces” identified in Earth’s mantle—essentially giant formations of rock the origins of which scientists have struggled for decades to explain—may have been formed by Theia, the proto-planet thought to have slammed into the ancient Earth billions of years ago. 

The collision between Earth and Theia is hypothesized to have ejected a significant portion of Earth into outer space; those fragments would have eventually coalesced under Earth’s gravity to form the Moon.


There's more at the link.

I'm no geologist, but given the temperatures in and beneath the earth's mantle, I'd assumed that any bits and pieces of another planet would long since have melted and combined with Earth's own planetary material in an unidentifiable slag.  Looks like I was wrong.

The thought that we may be standing (at a few miles' remove, of course) on the remains of another planet, one that formed our Moon out of the ejecta caused by its collision with Earth, is . . . somehow surreal.

Peter


Monday, October 21, 2019

A blast from the (fashionable) past


Australian reader Snoggeramus, who's contributed many candidates for our Doofus Of The Day award, drew my attention to this 1997 report.

George Alexander of the Jet Propulsion Laboratory reports that attorneys for Oleg Cassini phoned, saying how dare JPL put the fashion designer’s name on its Saturn probe without permission.

JPL’s lawyers replied that the Cassini spacecraft was named for Jean Dominique Cassini, an 18th century astronomer.

“There was a long silence on the other end of the phone,” Alexander said, “followed by an ‘Oh.’ ”

Talk about an argument lost in space.

Yes, that would have left egg on the lawyers' collective faces.  I wonder if they were even aware, before this happened, that their fashion idol boss was named for someone rather more historically famous than he'll ever be?  It's probably too late to give them a Doofus award, but I reckon they deserved one!

Peter

Wednesday, July 10, 2019

A voyage in a vacuum produces a different sort of vacuum


I didn't know that the Dustbuster was the fruit of the Apollo moon landing program, but it seems it is, along with several other iconic products.

The Dustbuster was only made possible thanks to Black & Decker’s work with NASA on developing a lightweight and power-efficient tool for the Apollo Lunar Surface Drill. The same motor design used on the 1969 moon landing was then used to create the Dustbuster.

There's more at the link.

There's a certain wacky circular logic to that.  Design a motor that will work in a vacuum - then use the same motor to power a vacuum-cleaner in atmosphere.  It's a sort of function reversal, isn't it?




Peter

Wednesday, May 1, 2019

That was an "Oopsie!" moment, all right . . .


Last week's failed test of the SpaceX Dragon 2 capsule has been conspicuous for the absence of any comments from SpaceX or NASA about what went wrong.  Until recently, all that was known was that, from several miles away, smoke was seen drifting from the launch pad.

It now appears that the failure was pretty catastrophic.  The Dragon capsule's ejection rockets were to be tested.  They're designed to pull the capsule clear of its launch rocket in the event of a malfunction, before the capsule parachutes to a safe landing with its occupants.  This video, allegedly taken from one of the launch pad cameras, and seemingly copied by a smartphone filming a display screen, is said to show what happened.  (Profanity alert - the onlookers use some fairly descriptive terms to show their dismay.)





Yeah . . . if I were an astronaut, I wouldn't be real comfortable at the thought of riding inside that capsule, with that escape system!  Some redesign appears necessary.




Peter

Monday, September 24, 2018

The Sun as a ribbon in the sky


NASA's Astronomy Picture of the Day yesterday was this lovely image of the Sun's analemma over Scotland during the past year.




You can read more about it at the link.

Also eye-catching is this video, courtesy of Daily Timewaster, showing four-year time-lapse footage of the explosion of star V838 Monocerotis between 2002 and 2006.  Watch it in full-screen mode for maximum impact.





Things like that remind us of how truly insignificant humanity is, on a galactic and universal scale.  We aren't even a speck of dust by comparison.

Peter

Sunday, May 27, 2018

Sunday morning music


I've been working my trousers to the bone, editing and preparing the second and third volumes of my new "Cochrane's Company" trilogy for publication in June and July respectively, and formatting the first volume for print publication.  It's an immense amount of work, not only to try to get their elements uniform across all three volumes, but trying to catch as many errors as possible and fix them before publication.  (Sadly, in the first volume, "The Stones of Silence", I've already found - and/or been alerted to by readers - half a dozen mistakes.  I've just corrected them all, and a new edition will be going up next week.  Those who've bought it already in the Kindle Store will find their editions automatically updated, provided they've turned on the automatic updates feature.  That's another reason to delay the print edition of each book by a few weeks:  it gives my readers time to alert me to any mistakes I may have missed, so I can correct them before they're irretrievably on paper.)

Be that as it may, all three books are set in space:  so I figured some music around that theme might be appropriate.  Here's Gustav Holst's suite "The Planets".  This live performance, during the 2016 Proms Concerts, is by the National Youth Orchestra of Great Britain and the CBSO Youth Chorus, conducted by Edward Gardner.

When "The Planets" was written, between 1914 and 1916, Pluto had not yet been discovered, so it was not included.  The original suite ended with "Neptune, the Mystic", which "concludes with a wordless female chorus gradually receding, an effect which Warrack likens to 'unresolved timelessness ... never ending, since space does not end, but drifting away into eternal silence'."  However, this rendition includes an additional piece, "Pluto, the Renewer", written as an add-on to the suite by Colin Matthews.  The elements are, in order:

Mars, the Bringer of War 0:00
Venus, the Bringer of Peace 7:15
Mercury, the Winged Messenger 15:09
Jupiter, the Bringer of Jollity 18:58
Saturn, the Bringer of Old Age 26:42
Uranus, the Magician 35:32
Neptune, the Mystic 41:20
Pluto, the Renewer 49:17





Lovely, stirring music.  One does wonder how much influence the First World War (which was raging during the period in which Holst composed this suite) had on its themes and musical imagery.  I suspect it was more than a little.

Peter

Monday, April 16, 2018

Teaser III


Here's an excerpt from the third volume of the military science fiction trilogy I'm getting ready to publish.  I put up a teaser from the first book a few months ago, followed by a teaser from the second book.  Here's an earlier version of the cover for the first volume, which will be further modified before publication.




I've been hard at work on the series for five months now.  God willing, the first volume will be published in less than a month from today, and the next two volumes will appear at approximately 30-day intervals.  To keep your interest, here's a teaser excerpt from the third volume.

    Captain Pernaska sat on the hard, narrow bunk in his cell, closed his eyes, and prepared himself for death.
    Remember our Patriarch, he thought forcefully to himself. He dared not speak aloud, because the enemy would overhear him through the microphones they were sure to have hidden in this confined space. Even in his dotage, afflicted with disease, he went on a combat operation, to prove to our people that he would never ask them to risk anything he was not prepared to risk himself. What an example he set! He died in action, and inspired all of us to avenge his loss in the blood of our enemies. Today is my chance to do that. It is not a tragedy – it is an honor! May I prove worthy of it, and may my death be worthy of his!
    He had to act before his captors could transfer him to an interrogation facility. He knew all the Brotherhood’s plans for the next few years, and all about their ships. Most important of all, he knew the coordinates in space of their secret base, information entrusted only to the Commanding Officers, Executive Officers and navigators of their vessels. Hawkwood absolutely could not, under any circumstances, be allowed to learn that secret… so he had to die. It was as simple as that.
    His kidnappers had been almost unbelievably, even criminally inept in giving him access to the ship’s entertainment library, via the screen on the bulkhead beyond the bars. He was still puzzled by that. Hawkwood had proved to be a formidable opponent in space combat, worthy of the Brotherhood’s steel. Why had they made such an elementary error? Perhaps this ship was the exception that proved the rule of their efficiency and effectiveness, the weakest link in their chain. Please God, its crew was not alone in being so sloppy! He had taken advantage of the screen and its voice-activated controls – which his oh-so-stupid captors had obligingly demonstrated to him – to access the courier vessel’s layout, provided as part of the entertainment library so that passengers could find their way around if necessary. He knew where the brig was in relation to the rest of the ship, and where the airtight bulkheads and doors were. They would separate the vessel into pressure-tight compartments in an emergency.
    In Galactic Standard English, he called, “Display orbital approach.” The screen obediently flickered, then resolved into a radar-like display of the planet ahead. Several spaceships’ orbits were outlined in yellow, while this ship’s approach to its own assigned trajectory was shown in red. The vessel looked to be no more than a few minutes away from entering orbit. He took a deep breath. It was almost time.
    He’d asked for a couple of pairs of utility overalls, to wear instead of his Captain’s uniform. He’d sent that to the ship’s laundry, to be restored to pristine freshness in readiness for this day. Now he took off the overalls, folded them, laid them on his freshly-made bed, and put on his uniform. He tied the old-fashioned laces, critically observing his reflection in the shoes that he’d polished to mirror brightness, just like when he’d been a cadet officer all those years ago. He settled the jacket over his shoulders, and buttoned it. He had no mirror in which to examine his appearance, but knew it would be as close to perfect as possible under the circumstances.
    He heard approaching footsteps, and smothered a savage grin with his hand. He’d been on his best behavior with the spacers who brought him meals twice a day, and escorted him to and from the shower twice a week. He’d tried very hard to give the impression of a man resigned to captivity, wanting no trouble, willing even to grovel before his guards in order to avoid conflict. He knew some of them regarded him with scornful contempt as a result… which was exactly how he had hoped they would react. Soon, very soon now, they would learn their error.
    He reached beneath the mattress on the unused top bunk, and withdrew the pen that one of the spacers had indulgently lent him ‘to write a letter to my wife’. When he’d handed over the letter – addressed to a non-existent woman, and filled with meaningless platitudes – it had been to a different spacer, who hadn’t asked for the pen to be returned. He had taken full advantage of that mistake. It had given him a weapon. Now he palmed it, with the point up his sleeve, as two spacers entered the brig compartment. Both were armed with pulsers, but only one had his weapon in his hand. The other’s was in the flap holster at his waist, which was unfastened, allowing the butt to peep out from beneath the synthleather cover.
    “All right,” the armed spacer said in Galactic Standard English, using what he presumably intended to be a commanding tone of voice. “Stand back from the door while we unlock it, then we’ll cuff your hands and take you to the docking bay.”
    “Yes, of course,” the captain answered subserviently, stepping back, half-turning away, hunching his shoulders as if to avoid a blow. The two spacers exchanged contemptuous glances, then the second, empty-handed man unlocked the barred door and swung it open.
    “Turn around and put your hands behind your back,” he ordered as he stepped inside.
    The captain made as if to obey, but instead of stopping with his back to the spacer, he continued turning, all the way around, moving suddenly faster. Before the startled man could react, he reached out with his left hand, grabbed his collar, and pulled him powerfully forward as he thrust with the pen in his right hand. Its point speared deep into the spacer’s left eye. He screamed in agony.
    “WHAT TH–” the second spacer began to yell, eyes bulging in surprise – but Pernaska did not stop. His left hand, still grasping the injured man’s collar, twisted him half-around while his now-empty right hand snaked out and grasped the butt of the holstered weapon, drawing it and releasing its safety catch. He violently shoved his writhing victim back towards the bars as the other spacer raised his pulser, blocking his line of sight, forcing him to step to one side to aim at their erstwhile captive. By the time he’d done so, the captain had acquired a rock-steady two-handed firing grip on his own pulser. He fired first, three rapid rounds, two into the spacer’s chest, the third at the center of his face as he yelled in pain and shock and began to fold forward over himself. The man dropped his pulser and slumped bonelessly to the deck. Pernaska turned back to the wailing spacer inside his cell and fired one more round into his head, killing him instantly.
    He shook his head in a vain attempt to clear his head of the sudden deafness caused by the hypersonic discharge of the pulser’s electromagnetic mechanism. Faintly, through the ringing in his ears, he heard the sudden whooping of the ship’s alarm, followed by the impact of airtight doors slamming shut, reverberating through the vessel’s structure. He grinned savagely. Thank you, you fools! You think you’ve locked me safely away from the bridge. Instead, you’ve locked me in the same section of the hull as all your off-duty watchstanders. They’re my meat now! You may kill me in the end, but not before I make you pay for my life in the blood of your spacers!
    He swiftly searched both bodies. Neither carried spare ammunition for their pulsers, but that was of minor importance. He’d used four of the twenty rounds in the first weapon, and there were twenty more in the other – more than enough for what he’d need. He tucked the second weapon into a pocket of his jacket, then called up the vessel’s schematic on the screen again. There were six four-person berthing units for the crew in the forward section of the hull, plus three two-berth units for supervisors and four single cabins for officers. Many of the crew were on duty, but according to the duty schedule he’d carefully memorized earlier, about a third should be in their berthing units. By now they’d have locked their doors, of course, in the vain hope that would protect them from him. He spat contemptuously. They would soon learn otherwise… the last lesson of their lives.
    He walked out of the brig, moving slowly and carefully, peering around the corner to make sure than no braver-than-usual spacer had decided to wait in ambush for him. The passage was clear. Grinning almost cheerfully, he moved up to the first sliding door on the port side. It was locked, as he expected. He reached for the keypad set in the bulkhead next to it, and entered the standard merchant vessel emergency access code. It was used on all commercial ships, in accordance with United Planets regulations, so that search-and-rescue teams could enter locked compartments if necessary. Sure enough, the keypad beeped, and the door slid back.
    Two spacers inside the compartment screamed in fear as they stared at the black-uniformed figure in the open doorway. Their cries turned to gurgles of agony as he pumped one round into each of their chests. They crumpled to the deck. He walked over, aimed carefully, and put a second round through the head of each man. That’s four, he thought with grim, bitter, vengeful satisfaction.
    A voice began yelling over the ship’s speakers, begging, pleading with him to stop. He ignored it as he turned to the door on the starboard side of the passage, and entered the emergency access code once more.

I'm over 50,000 words into the third book, more than half way.  The first and second books are complete, and I'm incorporating edits and changes suggested by alpha and beta readers.  I'm getting excited about the forthcoming launch.  I hope you enjoy the trilogy.

Peter

Wednesday, February 28, 2018

That's a big plane . . .


Stratolaunch, the hybrid aircraft made up of two new fuselages and wings, plus six engines from old Boeing 747's, is conducting taxi tests prior to its first flight later this year.  It's enormous, designed to hang a satellite launch rocket from beneath its center wing, and lift it to 30-40,000 feet before dropping it, to get it through the thickest layers of atmosphere and give it a "head start" to orbit.

The six-engine, 385-foot-wide aircraft, nicknamed Roc, is the world’s largest airplane as measured by wingspan. It’s designed to carry up rockets for high-altitude launches in midflight.

Stratolaunch has said orbital launches could begin in the 2019-2020 time frame if the test program goes well.

Last weekend’s tests built on an initial round of low-speed runway tests in December, and were aimed at evaluating updates made to the plane’s steering and primary braking systems, Vulcan spokeswoman Alex Moji said in an email.

“We are excited to report all objectives of this test were achieved – the aircraft reached a runway speed of 40 knots (46 mph),” she said. “The data collected will be used to evaluate and update our flight simulator for crew training.”

There's more at the link.

Here's what the behemoth looks like during taxi tests.  Compare it to the size of the pickup trucks nearby.





That's BIG!




Peter

Thursday, February 22, 2018

Rockets, space and men: Moonbat Central strikes (out) again


Logic, rational thought and reasoning ability are conspicuous by their absence in this screed.

Frittering away your life savings on a red sports car is so last century. Instead, today’s man who is grappling with the limitations of his mortality spends $90 million on a rocket to launch a $100,000 electric car, helmed by a robot by the name of “Starman,” into space.

. . .

These men ... are not only heavily invested in who can get their rocket into space first, but in colonizing Mars. The desire to colonize — to have unquestioned, unchallenged and automatic access to something, to any type of body, and to use it at will — is a patriarchal one. Indeed, there is no ethical consideration among these billionaires about whether this should be done; rather, the conversation is when it will be done. Because, in the eyes of these intrepid explorers, this is the only way to save humanity.

It is the same instinctual and cultural force that teaches men that everything — and everyone — in their line of vision is theirs for the taking. You know, just like walking up to a woman and grabbing her by the pussy.

It’s there, so just grab it because you can.

The desire to colonize — to have unquestioned, unchallenged and automatic access to something — is a patriarchal one.

. . .

... the impulse to colonize — to colonize lands, to colonize peoples, and, now that we may soon be technologically capable of doing so, colonizing space — has its origins in gendered power structures. Entitlement to power, control, domination and ownership. The presumed right to use and abuse something and then walk away to conquer and colonize something new.

. . .

The raping and pillaging of the Earth, and the environmental chaos that doing so has unleashed, are integral to the process of colonization. And the connection of the treatment of Mother Earth to women is more than symbolic: Study after study has shown that climate change globally affects women more than men ... While men compete over whose rocket is the biggest, women are fighting to stay alive against assaults on their personhood — and their planet.

There's more at the link.

I'm sure it will come as no surprise to learn that the author is "the Editorial and Communications Manager of the Clayman Institute for Gender Research at Stanford University".  Where else would one find inspiration for such drivel?
  • "Colonization as patriarchy" - WTF???  From its earliest days, colonization was all about obtaining resources for the colonial power, not about patriarchy.  It was (and probably will always be) commercial, rather than societal or cultural, in nature.
  • "No ethical consideration" - well, in commercial terms, generally, yes.  In other ways, no.  Don't forget, a primary impulse to the age of colonization was to spread the Christian gospel to the "heathen".  (They may not have wanted it to be spread to them, of course, but nobody asked their opinion.)
  • The origin of colonization was in "gendered power structures"?  Only because society happened to be set up that way at the time - and remember, women in powerful positions (Elizabeth I of England, and before her Isabella I of Castile - sponsor of Christopher Columbus - and others) supported colonization just as strongly.  I doubt whether the gender of those in power had much to do with colonization for economic and/or religious purposes.
  • Equating colonization with sexual assault?  That's pushing it way beyond any rational connection that I can see.  Same goes for climate change and colonization.  This author is making connections between entirely unrelated concepts, and offering no solid, factual, verifiable evidence for doing so.  It's argument from emotion rather than reality.

One wishes that authors such as this would take a couple of courses in Logic.  It's extremely helpful when formulating arguments for or against anything, because it forces one to be rational in one's approach - something that's sadly lacking in the above diatribe.  The author really needs a better understanding of logical fallacies before setting out to argue her case.  Her lack of it shows.

Peter

Wednesday, January 24, 2018

Stand by for a "super blue blood moon"


I had no idea that such a combination was possible, but according to the Telegraph, it is.

Falling on January 31, it will be the product of three different phenomena, each of which would be exciting enough on their own.

Not only will it be a blue moon - the name given to the second full moon in one calendar month - it will also be a supermoon; this occurs when a full moon is at the point in its orbit closest to Earth, making it appear larger and brighter.

However that's not all: it will also be a blood moon in some areas of the world. A blood moon happens when the shadow of Earth casts a reddish glow on the moon.

Stargazers in Australia, New Zealand, central and eastern Asia, Indonesia, Alaska, Hawaii and parts of North America will be able to see the super blue blood moon, if the skies are clear ... It will be the first time a 'super blue blood moon' has graced the skies in 152 years, with the last one falling on March 31, 1866.

There's more at the link.

If you'd like to watch it, NASA has some advice.

NASA says viewing the eclipse may be challenging in the eastern time zone, with the best viewing in the western U.S.

“The eclipse begins at 5:51 AM ET, as the Moon is about to set in the western sky, and the sky is getting lighter in the east,” said Gordon Johnston, program executive and lunar blogger at NASA Headquarters in Washington.

The Moon will enter the outer part of Earth’s shadow at 5:51 a.m. EST, but it reportedly won’t be all that noticeable. The darker part of Earth’s shadow will begin to blanket part of the Moon with a reddish tint at 6:48 a.m. EST, but the Moon will set less than a half-hour later, according to NASA.

“So your best opportunity if you live in the East is to head outside about 6:45 a.m. and get to a high place to watch the start of the eclipse—make sure you have a clear line of sight to the horizon in the west-northwest, opposite from where the Sun will rise,” said Johnston.

Again, more at the link, including a diagram of what will happen, when.

If you'd like to know more about the various names given to different phases and/or perspectives on the moon, see here.

Peter