Scientists might have just found Earth's icy, distant cousin a few hundred million light-years away. HD 137010 b is one of ...

Discovered by NASA’s Kepler spacecraft, Kepler-10c is a massive exoplanet that challenges existing theories about planetary formation and habitability. Dubbed a “mega-Earth,” this planet’s ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. A super-Earth basks in the glow of its star in this artist's impression. Is the world habitable ...

Astronomers and philosophers have long speculated on the possibility of planets orbiting distant stars. In the 1990s the first of such objects, now called exoplanets, were discovered by astronomers.

NASA has discovered a new super-Earth that has a year only lasting a few hours. The exoplanet K2-141b, was found very close to its orange sun-like star, and has an orbital period of less than one ...

If you examine our solar system’s giant planets, you’ll notice right away that they’ve all got moons—a lot of moons. While ...

It's hard to remember now, but there was a long period of time in which scientists weren't sure how many planets might actually exist throughout the galaxy, much less how likely it might be to find a ...

When scientists discovered the first planet orbiting another star in 1995, few outside astronomy circles noticed. That planet, 51 Pegasi b, opened the door to a field that now boasts more than 5,000 ...

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Our solar system hosts almost 900 known moons; more than 400 orbit the eight planets while the remaining orbit dwarf planets, ...