Vladimir Mayakovsky wrote a poem about it, including the following line: “Every proletarian should see the Planetarium!” The ...

CHABOT: So, in planetary science ... Here I'm gonna make a model of the solar system. This rock is my sun, and I'm gonna place it right there, and an inch away, I'm gonna place the Earth.

Hale-Bopp originated in the Oort Cloud, a theoretical shell of icy planetesimals surrounding the sun in the outer reaches of ...

After a decade-long search, some scientists say a growing number of clues point to the existence of a hidden planet in the ...

Surface features of Uranus' icy moon Miranda point to the existence of a once deep ocean, one that still may exist today.

An asteroid named for the ancient Egyptian god of darkness and disorder may not pose a hazard to Earth, but that does not ...

For nearly 40 years, scientists have generally agreed that Earth's Moon formed from debris after a massive collision with our ...

“To find evidence of an ocean inside a small object like Miranda is incredibly surprising,” said Tom Nordheim, a planetary ...

By 3.6 billion years ago, Mars should have become too cold for liquid water, but something kept the rivers flowing.

Could a moon that orbits Uranus billions of miles away have an interior ocean? This is what a recent study published in The Planetary Science Journal hopes | Space ...

Researchers at Penn State University suggest that Earth’s only satellite may have come from a “binary-exchange capture” ...