The molten planet, with an atmosphere rich in sulfur-bearing gases, is unlike anything astronomers have ever smelled.

Astronomers have detected an Earth-size planet candidate orbiting a nearby star once a year, making it a promising target for future studies.

In a distant part of our cosmos, an intriguing new world exists. This newly discovered exoplanet, identified as L 98-59 d, seems to play host to a rare type of planetary environment.

A NASA mission has spotted an Earth-size exoplanet orbiting a small star about 100 light-years away. The planet, named TOI 700 e, is likely rocky and 95% the size of our world. The celestial body is ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Just six light-years from the solar system — in cosmic terms ...

For decades, astronomers have struggled to differentiate giant planets from brown dwarfs, a class of objects more massive ...

There's a whole slew of objects that astronomers aren't sure whether to classify as "failed stars" or "overgrown planets." ...

An exoplanet orbiting close to its host star triggers violent flares that are destroying its atmosphere, according to new research from the European Space Agency's Cheops mission. Credit: Janine ...