A distant 'exomoon' the size of Jupiter is changing how we think about the cosmos.

Exoplanets are planets that orbit stars other than the sun and thus exist outside the solar system. The word "exoplanet" ...

Have astronomers observed the first exomoon, or have they spotted a weird object that could challenge the very concept of ...

In a major milestone in the search for life on other planets, astronomers have detected, for the first time, an atmosphere ...

Scientists discover the first confirmed atmosphere in habitable zone outside our solar system on LHS 1140b ...

It has taken over ten years, but astronomers have finally won a prolonged game of cosmic hide-and-seek with a planet hiding ...

Dreams of finding a sort of Earth 2.0 motivate much of the thinking around the search for exoplanets. But there is more to ...

A Jupiter-size exoplanet orbiting a dead star baffled astronomers. But the planet named WD 1856 b could preview the fate of our own solar system when the sun dies.

More than 6,000 exoplanets, or worlds beyond our solar system, have so far been confirmed. The new technique involved analyzing old data from NASA's TESS satellite, focusing on fainter stars. Finding ...

A planet so distant that its starlight began traveling toward Earth around the Middle Ages has given one University of Cincinnati graduate student the kind of first look astronomers wait years for.

Atmospheres have already been detected around gas giant exoplanets and sub-Neptunes.

As part of the Decadal Survey on Astronomy and Astrophysics (Astro2020), the Panel on Exoplanets, Astrobiology, and the Solar System will identify and articulate the scientific themes that will define ...