Astronomers have identified a rare and unusually fast asteroid racing through the inner solar system. Known as 2025 SC79, the ...

Siraj’s Planet Y search started about a year ago when he was trying to find out whether the shape of the Kuiper Belt is flat.

A recent study by Princeton University astronomers suggests the possible existence of a previously undetected planet in our ...

A low-density, puffy planet orbiting relatively far from a young star in a nearly perpendicular orbit. What's going on?

Astronomers have discovered fresh evidence suggesting the possible existence of an unseen planet in the far reaches of our solar system.

On his social media, Kipping argued that the likelier explanation for what was actually depicted in the image was Phobos, the ...

(CNN) — After decades of searching, astronomers have uncovered some of the strongest evidence yet of exoplanets orbiting Barnard’s Star, the nearest single star system to Earth. The four planets are ...

2185_HamiltonSpectrographVogt © 2003 Laurie Hatch, image and text – Lick Observatory – Mt. Hamilton 2003 December 11 – The Shane 120" Reflector was the second ...