SUNSET: 
Molten Sulfurous World Blurs Exoplanet Categories
An oddly low-density planet isn't quite rocky or gaseous — instead, it might have a deep ocean of magma and a stinky, sulfurous atmosphere.
Baby Planet Clears Gap in Young Protoplanetary Disk
With the Very Large Telescope in Chile, astronomers have spotted a planet forming around a star 430 light-years away.
Alpha Centauri Might Have a Planet, Webb Telescope Finds
Direct images from the James Webb Space Telescope show what could be a Saturn-mass planet around Alpha Centauri.
Some Planets Are Bigger Than We Thought
More than 200 planets in the TESS catalogs may be bigger than originally estimated — putting initially Earth-size planets into the super-Earth category.
James Webb Space Telescope Discovers Its First Planet
The Saturn-mass planet candidate is probably newly formed and orbits a young star that's only 6.4 million years old.
Hints of Life on a Potential Ocean Planet
Astronomers might have detected hints of life on a faraway planet — but they need more observations before they can say for sure.
Tiny Disks Shed Light on Super-Earth Origins
A team of astronomers has obtained high-resolution images of all known protoplanetary disks in the Lupus star-forming region.
Disintegrating World Sheds Comet-like Tail
Astronomers have spotted a disintegrating world being destroyed by its star, providing a unique window into the end of a planet’s life.
TRAPPIST-1b Atmosphere Debated; Some Stars Take Their Time Forming Planets
In this roundup of recent exoplanet news, we look at whether a famous world is really so airless and at just how long planets take to form.
Charting the Cosmic Shoreline: Which Planets Have Atmospheres?
Which of the nearly 6,000 known exoplanets have atmospheres? With help from the James Webb Space Telescope, astronomers are inching closer to an answer.
Unveiled: The Youngest Transiting Exoplanet Ever Detected
A passing star may have warped a veil of dust to expose the embryonic planet.
A Closer Look at a Potential "Eyeball Planet"
New James Webb Space Telescope observations of LHS 1140b hint at a temperate water world with a nitrogen-rich atmosphere.
Astronomers Discover New Earth-size World Only 40 Light-Years Away
This nearby terrestrial world might just reveal the secrets of atmospheric composition and habitability for planets like Earth and Venus.
Astronomers Reopen the Mystery of a Planet That Shouldn’t Exist
New research may have revived the mystery of 8 Ursae Minoris b, a seemingly doomed exoplanet that shouldn’t exist.
Planet Candidate Could Be Incandescent with Lava Flows
A new planet candidate discovered in data from NASA's TESS mission could be an extreme lavaworld, pushed and pulled by the gravity of its own star and two other close-in planets.
JWST Photographs Possible Giant Planets Around White Dwarfs
JWST has directly imaged two giant exoplanets orbiting white dwarf stars. This discovery may reveal the fate of our solar system.
Hubble Reveals Possible Water-Vapor World
New Hubble Space Telescope observations reveal the warm sub-Neptune GJ 9827d might have a steamy atmosphere.
Unexplained Auroras Found on a Lonely Brown Dwarf
James Webb Space Telescope observations of a faint, giant world have revealed the signature of aurorae — even though the world has no star.
Six Sub-Neptunes Discovered 100 Light-Years Away
Astronomers have uncovered six sub-Neptune exoplanets dancing in lock-step around the same distant star, shedding light on their formation.
Webb Telescope Peers into Puffy Planet with Clouds of Sand
A mere 200 light-years away, there's a planet with the density of styrofoam and clouds of sand. How did it get so weird?
