“This isn’t what we expected at all,” researchers said of a Mega-Earth that defies planet formation theories.

Found in the northern sky, GJ 3378b is a potentially rocky world with liquid water on its surface, receiving 90% of the ...

If Earth is a superorganism that intelligently regulates the conditions for life, humans could be part of its master plan.

It's nearly 170 million years old. It's more than 2.5 times the size of Earth. And it's the first exoplanet discovered and ...

Scientists have found a massive rocky world far beyond our solar system that is more than 20 times the mass of Earth.

"This isn't what we expected at all." ...

Over the past three decades, computer models of planetary system formation have gone from fairly crude representations to ...

Two continent-sized structures deep inside Earth may contain remnants of Theia, the ancient planet thought to have collided ...

Narrated by Sir David Attenborough, the popular nature docuseries is now airing on BBC America. By Rudie Obias If you purchase an independently reviewed product or service through a link on our ...