Rogue planets themselves are not thought to be good places to look for life. One of the most critical ingredients for life on Earth is liquid water; there's no form of life that we know of that can ...

It all started when a doctoral candidate at the University of Washington found a Sun-like star behaving strangely.

When worlds collide…suns act squirrely. Astronomers have witnessed a rare and violent cosmic crash between two planets, and ...

There is a category of planet that belongs to no star. It was thrown clear of its solar system early in the chaos of ...

New research shows that some frozen moons may hide boiling oceans beneath their icy shells, shaping strange surface features.

Moons may seem like quiet companions to the planets, but many of them are worlds every bit as fascinating as the planets themselves. Some are covered in oceans, some erupt with lava, and others hide ...

The next full moon of 2025 will arrive two days before Valentine's Day this year. Known as the "snow moon," the full moon will be visible Feb. 12. The snow moon won't be the only event to keep ...

Astronomers say a distant, sunlike star shows signs of a catastrophic planet-on-planet crash that may mirror the ancient impact that formed Earth's moon.

Liquid water is considered essential for life. Surprisingly, however, stable conditions that are conducive to life could ...