The Moon is often described as a pristine, silent world. No rain, no wind, no atmosphere to speak of. What that also means, in a very practical sense, is that nothing up there rusts, erodes, or gets ...

Claims have emerged that NASA pilots were told to destroy photos that may have contained images of UFOs, as other astronauts ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. A small space rock ...

Scientists have discovered carbon dioxide and hydrogen peroxide on the surface of Charon, Pluto's largest moon, offering clues about the origins of the space rock and other celestial objects in the ...

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Elizondo said the photographs appear to show large structures on the lunar surface featuring distinct right-angle cuts.

A chunk of space rock that visited near Earth's orbit last year was widely referred to as a "mini-moon." Turns out the lunar-inspired moniker may have been more accurate than we realized. The ...

Scientists think a small rock discovered near Earth last August was hurled into space by an ancient impact on the lunar surface. By Becky Ferreira For a few months last fall, a school-bus-size space ...

Scientists propose a 'remelting' of the Moon's surface 4.35 billion years ago due to the tidal pull of Earth causing widespread geological upheaval and intense heating. Much about the Moon remains ...