Most of the planets we’ve identified are in orbit around stars and formed from the disks of gas and dust that surrounded the ...

Huge, red "super-Jupiter" exoplanet orbits its star. Since astronomers first looked beyond the solar system three decades ago to discover extrasolar planets, or exoplanets, we've known that planets in ...

With sapphire waterfalls, lava rain and orbits around dead stars, these distant worlds push the limits of what’s possible.

Planets come in all sizes, but some discoveries have completely blown away expectations. In 2025 alone, astronomers have confirmed massive worlds that were thought to be unlikely, or even impossible, ...

On a mountaintop in Chile, excavators have just started work on a construction site. It will soon be home to a powerful new telescope that will have a good shot at finding the mysterious Planet X, if ...

Super-thin planet nurseries have a boosted chance of forming big planets, according to a study announced this week at the Europlanet Science Congress (EPSC) 2022 in Granada, Spain. An international ...

A big parade that’s on tap for Monday morning won’t feature any floats or marching bands. Instead, it will be a planetary parade up in the sky — with six of the planets in our solar system lining up ...

Astronomers have found planets that are twice as wide as Jupiter and more than 10 times as heavy, but there's a limit to how big planets can get. When you purchase through links on our site, we may ...