The Chang'e 6 capsule landed in the Chinese province of Inner Mongolia on Tuesday. CCTV Screenshot by NPR hide caption
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In this composite image provided by NASA, the SDO satellite captures the path sequence of the transit of Venus across the face of the sun on June 5-6, 2012 as seen from space. The next pair of events will not happen again until the year 2117 and 2125. NASA/Getty Images hide caption
A U.S. Marines helicopter hovers over the Atlantic ocean during an attempt to retrieve astronaut Gus Grissom's Liberty Bell 7, which sank 15,000 feet shortly after splashdown on July 21, 1961. AP hide caption
The U.S. flag stands alone on the surface of the moon. NASA/Getty Images hide caption
Jasper Barnett, a junior at Thomas Jefferson High School for Science and Technology in Alexandria, Va., looks up in the school's planetarium. Elissa Nadworny/NPR hide caption
People pay tribute to British singer David Bowie in front of a mural by artist Jimmy C in London on Jan. 11. Tim Ireland/AP hide caption