Our solar system may have a ninth planet after all, researchers say ... of the Astronomical Society of Australia but not yet ...

Just as Luke Skywalker watched two suns set from his sandy home planet Tatooine, a newly discovered planet called 2M1510 is circling its own twin stars some 120 light years away from our Solar System.

This week, an old astronomical controversy is renewed as researchers present new evidence for a hidden "Planet X" in our ...

An international team of astronomers reports the discovery of two new exoplanets, a few times more massive than Earth, ...

and the planet orbits in a ring which is further out. But this newly discovered planet is different. The pair of stars orbit in a ring structure, and the planet orbits them around the poles.

Pluto was reclassified as a dwarf planet in 2006. Our solar system may ... of Australia but not yet peer-reviewed. MORE: Exoplanet discovered in 2020 has the coldest temperatures ever measured ...

In 2018, astronomers discovered a brown dwarf binary system ... Researchers believe that pair 2M1510 is orbited by a planet in a "polar", or perpendicular, orbit. This is the first time we ...

The newly discovered planet, Wolf 327b, is estimated to be about 1.8 times the diameter of Earth and travels around its host star in a short amount of time, 13.7 hours. This close proximity suggests ...

and his team have discovered signs of molecules that are typically produced by simple organisms on Earth. This discovery hints at possible signs of life on the newly identified planet. According ...

Initial analysis of the images, detailed in 17 newly published papers, clearly shows that these protoplanetary disks with still-forming planets are highly dynamic, chaotic places that already harbor ...

A rock containing many smaller round stones could indicate that there was once a large amount of liquid water on the Red Planet.