Tranquility Base, the Apollo 11 mission's Eagle lunar lander touchdown site as seen in July 1969. Apollo 12 lunar module pilot Alan Bean steps down to moon's surface during his 1969 flight. After ...

Is this heaven? No, but there are pieces of the heavens in Iowa — and 135 countries, all U.S. states and the United Nations.

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. While parts of the ...

The last time NASA collected data on the heat emerging from the moon's interior was when the space agency still sent astronauts on Apollo missions. The lunar heat-flow study had seemingly ended.

Apollo Lunar Modules -- Post-Apollo. Space Exploration Initiative ; Faster, Better, Cheaper ; Decadal Planning Team -- Return to exploration. Concept Exploration and Refinement landers ; Exploration ...