Astronomers are closing in on one of the most tantalizing possibilities in planetary science, evidence that a previously ...

From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.

NASA has taken a major step toward one of its most ambitious science goals as it searches for signs of life on planets beyond ...

There could be a ninth planet in our solar system that's lying in wait to be discovered - and no, it's not Pluto. Our solar ...

Astronomers used a telescope in Hawaii to find a new object on the outer edges of our solar system, helping to fuel evidence of a long-standing theory about Planet Nine, or Planet X. For years, ...

Ammonite was discovered using the Subaru Telescope in Hawaii, with follow-up confirmation from the Canada-France-Hawaii Telescope. Its orbit and size officially qualify it as a distant dwarf planet.

The search for an unknown planet in our solar system has inspired astronomers for more than a century. Now, a recent study suggests a potential new candidate, which the paper’s authors have dubbed ...