Unlike our Moon, they can keep water in oceans liquid for more than 4 billion years.

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

Planets drifting unmoored through interstellar space, with no star to call home, may still have moons that are warm enough to support life, a new study has found. Through a combination of a thick ...

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

Scientists simulated an asteroid impact, and Deinococcus radiodurans’ cell membranes made it through. This suggests that life ...

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 ...

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