Exoplanets like Earth have been discovered but not all Earth-like planets are equal when it comes to alien life.

Spectacular clouds swirl across the surface of Jupiter. These clouds contain water, just like Earth's, but are much denser on ...

Thanks to the discovery of thousands of exoplanets to date, we know that planets bigger than Earth but smaller than Neptune ...

Recent astronomical observations have revealed a startling reality: aging stars are far more destructive to their orbiting planets than previously thought. This discovery, which challenges ...

The star system V1298 Tau reveals that many planets begin as large, low-density worlds that slowly shrink and shed their ...

"The combination of extreme disk size, strong asymmetries, winds, and potential planet formation makes it the perfect ...

Want to know when each planet will be at its best or when you can catch eye-catching planetary pairings in 2026? This guide breaks down the major planetary events of the year, from conjunctions to ...

On August 10, six planets—Mercury, Venus, Jupiter, Saturn, Uranus, and Neptune—will line up in an arc in the night sky. Four of these planets—Mercury, Venus, Jupiter, and Saturn—can be seen with the ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. This planet parade — following on from one in the evening ...