Astronomers have used the James Webb Space Telescope to capture the most detailed look yet at the atmosphere of Kepler-51d, a planet so lightweight it has been compared to cotton candy. The new data ...

These three exoplanets are among the least dense ever found, and all attempts to probe their atmospheres have been blocked by ...

Why are “super-puff” exoplanets so intriguing? This is what a recent study published in The Astronomical Journal hopes to ...

Kepler-51d is a giant, ultra-light “super-puff” planet wrapped in an unusually thick haze that’s blocking scientists from ...

A hazy, ultra-light “super-puff” planet, Kepler-51d, is hiding its secrets and challenging how scientists understand planet formation.

Learn more about the Kepler-51 star system and some of the ''oddball" planets that reside there.

A bizarre, ultra-light planet is cloaked in such a thick haze that even JWST can’t reveal its composition. Its unusual size and orbit are forcing scientists to rethink how planets form.

NASA's elite planet-hunting spacecraft has been declared dead, just a few months shy of its 10th anniversary. Officials announced the Kepler Space Telescope's demise Tuesday. Already well past its ...

On March 7, 2009, the Kepler Space Telescope took off from Cape Canaveral aboard a Delta II rocket. For almost a decade, the space telescope expanded our understanding of the universe before it ...