Researchers at the University of Göttingen in Germany compared rock samples from the moon and Earth. The likeness led them to conclude the satellite must have formed entirely from the same ...

Each object is a special case, and scientists compare them with known meteorites ... They can give insight into how impacts affect the moon or other bodies such as Earth and Mars.

With each passing night as, the crescent slowly widens and it begins to appear against a progressively darker background, its ...

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 ...

Two Grand Canyon-size features on the far side of the moon were likely formed in about 10 minutes after an unknown object slammed into the moon 3.8 billion years ago.

Dwarf planet Pluto and our Earth are the only two worlds in our solar system with very large moons. These may have come about by a "kiss and capture" process, which preserves a moon's large size.