Exoplanets

A nearby Earth-sized planet beyond our solar system could soon add to the diversity of known terrestrial worlds with their own "air."

New insights into the chemistry of exoplanet atmospheres indicates planet-wide rainfall might take place following hydrogen atmosphere and water mixing.

Understanding exoplanet evolution could help solve the mystery of the 'hot Neptune desert.'

A newly found super-Earth could help provide answers as to why there are hardly any planets twice the diameter of Earth.

Astronomers have discovered two new exoplanets that are similar to other worlds found in the Milky Way, but unlike any in our own solar system.

JWST could potentially detect the signature of methyl halide compounds, produced by microbial life in Earth's ocean, on hypothetical hycean exoplanets.

Astronomers have examined infant planets orbiting a star 370 light-years away, seeing the exomoon forming disks of gas and dust around them in unprecedented detail.

Using the now-retired Kepler space telescope, astronomers have discovered that larger planets grow up in more turbulent homes than smaller worlds.

After many previous claims and false alarms, astronomers can finally confirm the existence of at least four planets less massive than Earth orbiting Barnard's Star.

A paper published in 2023 spurred discussion about whether life exists on an exoplanet named K2-18b. Two years later, the puzzle continues — and some scientists are expressing doubt.