Visualization of airless TRAPPIST-1b and its red dwarf star host


Exoplanet TRAPPIST-1b Has No Atmosphere

The TRAPPIST exoplanets offer the James Webb Space Telescope some of the best opportunities to observe rocky worlds. But Webb images show the innermost planet b has no atmosphere.

TRAPPIST-1 system


A Closer Look at the Worlds of TRAPPIST-1

Two new studies of the seven planets orbiting TRAPPIST-1 shed light on how these worlds formed and what they look like now.

Temperate exoplanet 11 light-years away


Planet Orbits Quiet Star 11 Light-years Away

Astronomers have discovered a potentially rocky planet around a red dwarf star just 11 light-years away.



New Age Estimate for TRAPPIST-1

A new study suggests that the seven-planet dwarf star could be much older than the Sun.

Red dwarf star with exoplanet

Stellar Science

Mini-Flares Might Threaten Life Around Red Dwarf Stars

A new study of data archived from the Galaxy Evolution Explorer (GALEX) spacecraft is revealing just how hard life might be on planets like those in the TRAPPIST-1 system.

trappist-1 orbits


Seventh TRAPPIST-1 Planet Confirmed

Astronomers have confirmed the existence of the seventh planet around the ultracool dwarf star TRAPPIST-1.

artist's concept of TRAPPIST-1 system

Stellar Science

Seven-Planet Star Hides Age, Might Be Deadly

The star with seven exoplanets puts out enough high-energy radiation to tear away the inner planets’ atmospheres in a few billion years.

illustration of TRAPPIST-1 planet sky


Seven Earth-Sized Planets Found Orbiting Dim Star

Astronomers have found seven Earth-sized planets around a cool red dwarf, all of which have the potential for liquid surface water.

TRAPPIST-1 planet system artist's illustration


Earth-size Planets Around Nearby Dwarf Star

Astronomers just discovered three planets, two of which are roughly the size of Earth, orbiting a dim nearby dwarf star. Their proximity makes their atmospheres ripe for observing.