A faint signal from old telescope data is causing a stir in astronomy: a planet barely larger than Earth, with an almost identical orbital period, and a star astonishingly similar to our sun. It is ...

The Earth-size planet HD 137010 b has a ‘50% chance of residing in the habitable zone’ of its sun-like star, scientists say Astronomers have discovered a potentially habitable new planet about 146 ...

Astronomers have detected a rogue planet with a mass equivalent to that of Saturn, and by taking observations from both the ground and space, they have also been able to measure its size and distance ...

Space is full of mysteries that can't be easily explained by the layman, and this latest one from a isn't likely to sour anyone on their fascination with space. Scientists from several institutions, ...

A new study has proposed the existence of Planet Y, an alternative Planet Nine candidate that is smaller and closer to Earth than the hypothetical Planet X, which astronomers have been hunting for ...

There may be a warp in the Kuiper Belt, possibly caused by “Planet Y” — a Mercury-to-Earth-sized world that orbits the sun way beyond the orbit of Neptune. Is there a mysterious “Planet Y” orbiting ...

Somewhere at the edge of the solar system a new Earth-sized world might be lurking, dubbed Planet Y. Astronomers have long proposed that there might be hidden planets beyond the Kuiper belt, a region ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. The “planet parade” — mistakenly being called an alignment ...

Astronomers have discovered a brand-new world hiding out beyond Pluto. While exciting, the discovery of this new world could challenge long-standing theories of the existence of Planet Nine. In fact, ...

EXCLUSIVE: Captain Planet and the Planeteers‘ long-awaited live-action adaptation is getting a big boost — and a major twist. In a competitive situation, Netflix has landed for development Captain ...