Moons orbiting rogue planets, worlds flung from their parent star systems into the cold of interstellar space, could maintain liquid water on their surfaces for billions of years if wrapped in a dense ...

So far, humanity has yet to find its first "exomoon"—a moon orbiting a planet outside of the solar system. But that hasn't been for lack of trying. According to a new paper by Thomas Winterhalder of ...

Provided they host thick, hydrogen-dominated atmospheres, moons orbiting free-floating exoplanets could retain much of the heat generated deep within their interiors by tidal forces. Led by David ...

There is a category of planet that belongs to no star. It was thrown clear of its solar system early in the chaos of planetary formation, sent drifting into the galaxy’s cold interior with no sun to ...

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. Moons orbiting starless ...

Scientists propose that life-sustaining environments may exist on moons orbiting free-floating planets drifting through interstellar space.

Hydrogen atmosphere could keep exomoons habitable for billions of years Liquid water is considered essential for life. Surprisingly, however, stable conditions that are conducive to life could exist ...

Jupiter’s moon Io is the most volcanically active place in the solar system. Let me tell you just how volcanic it is.