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
A "super-Earth" discovered using the TESS satellite might be a "water world," though more observations are needed.
Discovery Alert: Intriguing New ‘Super-Earth' Could Get a Closer Look
The James Webb Space Telescope will examine the "lives" of exoplanets, from formation through maturity and eventual demise.
Exoplanets: What NASA Will See with the Webb Telescope
Webb captured the distinct signature of water, along with evidence for clouds and haze, in the atmosphere surrounding a hot, puffy gas giant planet orbiting a distant Sun-like star.
Webb Reveals Steamy Atmosphere of Distant Planet in Detail
Two newly discovered "super-Earths" are rocky worlds – and could be ideal candidates for follow-up atmospheric observations.
Discovery Alert: Two New, Rocky Planets in the Solar Neighborhood
The detection of 30 comets in another solar system – exocomets – could shed light on the formation of our own system of planets.
Discovery Alert: 30 'Exocomets' Orbit a Familiar Star
An international team of astronomers confirms 60 new exoplanets, or planets orbiting other stars; a separate study finds tentative evidence of an “exomoon.”
Discovery Alert: A Flood of New Planets, Plus Hint of an ‘Exomoon'
The count of confirmed exoplanets just ticked past the 5,000 mark, representing a 30-year journey of discovery led by NASA space telescopes.
Cosmic Milestone: NASA Confirms 5,000 Exoplanets
Scientists will be able to measure a specific kind of space dust in nearby planetary systems’ habitable zones. Finding out how much of this material these systems contain would help astronomers learn more about how rocky planets form and guide the search for habitable worlds.
Studying Dust to Find New Worlds
NASA announced the discovery of seven Earth-size worlds orbiting the TRAPPIST-1 star five years ago. We've learned more in the years since, and we'll get an unprecedented look with the James Webb Space Telescope.
Day of Discovery: 7 Earth-Size Planets
The atmosphere of a "super Neptune" some 150 light-years distant contains water vapor, a new study shows.
Discovery Alert: Water Vapor Detected on a 'Super Neptune'
NASA's James Webb Space Telescope is in space! How long will it take to fully deploy and get into configuration?
What's Next for the Webb Telescope?
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.