Some planets seem to defy established rules. This is the case for hot Jupiters orbiting extremely close to their stars... in binary systems where two stars coexist. A new study proposes an explanation ...

The rusty world is full of mysteries—and some of the solar system's most extreme geology. Learn more about Earth's smaller, colder neighbor.

Earth, our home planet, is a world unlike any other. The third planet from the sun, Earth is the only place in the known ...

An international team has made a significant breakthrough in understanding the tectonic evolution of terrestrial planets. Using advanced numerical models, the team systematically classified for the ...

What is Planet Nine, and where is it? This question remains one of the biggest mysteries in astronomy. Researchers believe a giant planet may be hidden far beyond Neptune in the distant regions of the ...