No planets cooler than about 35.33 degrees Fahrenheit had ever been detected. An exoplanet discovered in 2020 contains the coldest temperatures ever measured on a planetary body, according to ...

Exoplanets are planets outside Earth's solar system that most often orbit a star. Astronomers have managed to bring an exoplanet into unprecedented focus by using a technique the researchers call 3D ...

Published in Nature Astronomy, the findings represent a first: while helium escape has been observed before, this is the ...

An alien world near Earth is being trailed by a gigantic tail, stretching longer than 40 Earths as it closely circles its home star. The enormous structure, which is made up of gas leaking from the ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Astronomers have ...

A new gas giant world discovered by citizen scientists using data from NASA's exoplanet-hunting spacecraft TESS is cool, literally and figuratively. This makes TOI-4465 b a rare case of a giant planet ...

"We thought clouds would hide life from us, but surprisingly, they could help us find life." Astronomers usually don't like clouds. After all, clouds obscure their view of the cosmos. But dense cloud ...

Join astronomers Franck Marchis (SETI Institute) and Julien Girard (Space Telescope Science Institute) for a 30-minute live discussion unpacking NASA’s exciting new findings from JWST. Just announced, ...

What if, someday, we decided that the usefulness of our planet had run its course, and humans needed to scour space to find ...