SUNSET: 
Mini-Neptune Reveals (Some of) Its Secrets
James Webb Space Telescope observations offer a new window inside the atmosphere of the secretive sub-Neptune GJ 1214b.
The James Webb Space Telescope Reveals Fomalhaut's Disk In Unprecedented Detail
Continuing its run of ground-breaking discoveries, the James Webb Space Telescope has snapped the clearest images yet of the dusty disk around the young star Fomalhaut.
Star Caught Swallowing a Planet
For the first time, astronomers have witnessed a star eat an exoplanet.
Where to Look for Life: Homing in on the Habitable Zone
Scientists are refining the definition of the habitable zone in an effort to aid future efforts at finding life.
Giant Planets Around Small Stars
Leading theories say giant planets shouldn’t be able to form around very low-mass stars. But a new study finds that, nevertheless, they do.
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.
Water on Earth Might Predate the Solar System
Astronomers studying the water vapor around a newborn star find that it’s chemically similar to ice in solar system comets, a possible source of Earth’s oceans.
New Planets in the Neighborhood
A planet-hunting consortium is marking five successful years by releasing data on more than 50 worlds.
A Fresh Look at Kepler-444’s Ancient Planetary System
Astronomers have taken a closer look at a system containing three stars and five planets and may have solved a mystery around its formation.
JWST Investigates an Exoplanet "Corgi"
The James Webb Space Telescope has found the tiny tail of a close-in exoplanet that's losing its atmosphere.
Webb Telescope Confirms Earth-size Exoplanet, Tries to Sniff Its Air
The James Webb Space Telescope has confirmed its first exoplanet, a rocky Earth-size planet, and attempted to take the measure of its atmosphere.
Webb Telescope Surveys a Hot Saturn
A collection of five research studies delve into the atmosphere of exoplanet WASP-39b as astronomers seek to better understand the chemistry of a world beyond the solar system.
Was Interstellar Object `Oumuamua a Chunk of Exo-Pluto?
The interstellar pancake named 'Oumuamua might have been a chip off a Pluto-like object in another star system.
Ancient White Dwarf Hosts Planetary Graveyard
Scientists have discovered one of the oldest planetary graveyards in the Milky Way: a cool white dwarf "polluted" with rocky debris.
Shields Up: Red Dwarf Worlds Might Adapt to Hostile Systems
Worlds around red dwarf stars might build an ozone "shield" in response to stellar flares.
Breadcrumbs Lead to Baby Planet
New radio images reveal evidence for a planet forming around the Sun-like star LkCa 15.
Webb's Exoplanet Data Are Almost Too Good
A new study urges caution in interpreting the chemical fingerprints that Webb is collecting of alien worlds.
Webb Captures an Exoplanet, a Brown Dwarf — and a Giant Tarantula
New Webb images reveal the space telescope's first exoplanet, first brown dwarf, and a stellar nursery teeming with activity.
Webb Reveals Jupiter, Puffy Planet, and Galactic Maelstroms in a New Light
Round out your week with these stunning views of the universe from the James Webb Space telescope.
When Planets Collect Comets
What kind of planets are likely to ensnare comets coming in from the icy outer reaches of a planetary system?