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

One of the primary goals of the James Webb Space Telescope (JWST) is to detect atmospheres around exoplanets, to try to suss ...

While most planets that we are familiar with stick relatively close to their host star in a predictable orbit, some planets ...

Roughly 1,000 light-years away from Earth, a gigantic disk of gas and dust is swirling around a young star and giving rise to ...

Mike Brown is convinced that beyond Neptune, at the far reaches of our solar system, there's an unseen giant planet. "This is the 5th largest planet in our solar system, lurking out there, waiting to ...

New images from NASA 's Hubble Space Telescope have revealed an enormous, oddly shaped disk of gas and dust around a single ...

A new extreme trans-Neptunian object (ETNO), designated 2023 KQ14 (Ammonite), has been discovered, representing only the fourth known sednoid – a class of ETNOs with highly distant and elongated ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. NEW YORK (AP) — A new Tatooine-like planet ...

It's an evocative idea that has long bedeviled scientists: a huge and mysterious planet is lurking in the darkness at the edge of our solar system, evading all our efforts to spot it. Some astronomers ...

What seemed like new planets around Fomalhaut were actually expanding dust clouds from violent planetary collisions seen by Hubble.