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Alien vs. Editor
A team of astrophysicists and citizen scientists have identified what may be some of the last planets NASA’s retired Kepler space telescope observed during its nearly decade-long mission.
Astronomers Discover Planets in NASA Kepler's Final Days of Observations
New data from NASA's Webb space telescope reveals new details about a strange but common planet type, a 'mini-Neptune.'
NASA's Webb Takes Closest Look Yet at Mysterious Planet
An international team of researchers has used NASA’s James Webb Space Telescope to measure the temperature of the rocky exoplanet TRAPPIST-1 b.
Webb Measures the Temperature of a TRAPPIST-1 Exoplanet
The planet is rocky and almost precisely the same size as Earth, but whips around its star in only two days.
Webb Confirms Its First Exoplanet
A second Earth-sized world is found in habitable zone of a star with three previously known planets.
Second Earth-sized World Found in System's Habitable Zone
A previously discovered "hot Jupiter" appears to be spiraling into its star, new data shows.
Discovery Alert: For This Familiar Planet, a Death Spiral
Two exoplanets orbiting a red dwarf star may be "water worlds." They are 218 light-years away in the constellation Lyra, and are unlike any planet found in our solar system.
Two Super-Earths May Be Mostly Water
Webb's firsts keep coming: Observations of the exoplanet WASP-39 b show fingerprints of atoms and molecules, as well as signs of active chemistry and clouds.
NASA's Webb Reveals an Exoplanet Atmosphere as Never Seen Before
New observations show that a previously identified exoplanet, TOI-1075 b, is among the most massive super-Earths found so far.
Discovery Alert: Massive Planet is a 'Hulk' among Super-Earths
A new study of the "super-Earth" GJ 1252 b shows that the planet likely has a very minimal atmosphere or, possibly, no atmosphere at all.
Discovery Alert: Ultra-hot 'Super-Earth' Could Have No Atmosphere
A newly discovered 'super-Earth' lies in the habitable zone around its star, and appears to be in a prime position for further atmospheric investigation.
Discovery Alert: A Rocky 'Super-Earth' in the Habitable Zone
Webb ushers in a new era of exoplanet science with the first unequivocal detection of carbon dioxide in a planetary atmosphere outside our solar system.
Webb Sees Carbon Dioxide in Exoplanet's Atmosphere
Explore Alien Worlds
Exoplanet Travel Bureau
This set of travel posters envision a day when the creativity of scientists and engineers will allow us to do things we can only dream of now.
Strange New Worlds
Explore an interactive gallery of some of the most intriguing and exotic planets discovered so far.
A planetary tour through time. The ancients debated the existence of planets beyond our own; now we know of thousands.