Planetary Science
JWST Sees No Atmosphere on ‘Earthlike’ TRAPPIST-1 Exoplanet
TRAPPIST-1b is probably an airless rock, but the same may not be true for its six Earth-sized siblings
Stories by Alexandra Witze
Planetary Science
NASA’s Asteroid-Bashing DART Mission Was Wildly Successful
New studies have revealed the spacecraft’s final moments and the remarkable aftermath of its impact
Extraterrestrial Life
Will an AI Be the First to Discover Alien Life?
SETI, the search for extraterrestrial intelligence, is deploying machine-learning algorithms that filter out earthly interference and spot signals humans might miss
Astronomy
NASA Really, Really Won’t Rename JWST despite Community Pushback
An investigation by agency historian finds no evidence explicitly linking former director James Webb with anti-LGBT+ actions
Planetary Science
Dying NASA Spacecraft Records Epic ‘Marsquakes’
As the InSight lander reports the largest-ever meteorite strikes on Mars, scientists wish it a fond farewell
Astronomy
‘Bit of Panic’: Astronomers Forced to Rethink Early JWST Findings
Revised calibrations for the James Webb Space Telescope’s instruments are bedeviling researchers studying the distant universe
Planetary Science
Fresh Images Reveal Fireworks from DART’s Asteroid Impact
The celestial crash between NASA’s DART spacecraft and the asteroid Dimorphos is yielding spectacular pictures and data
Extraterrestrial Life
Perseverance Mars Rover Makes ‘Fantastic’ Find in Search for Past Life
NASA’s Perseverance rover has collected four rock samples from an ancient river delta where organisms might have thrived
Public Health
Nuclear War Could Spark Global Famine
Smoke from burning cities would engulf Earth after a nuclear war, causing worldwide crop failures and starvation, models show
Space Exploration
NASA’s Perseverance Rover Begins Key Search for Life on Mars
Rolling up an ancient river delta in Jezero Crater, the rover starts crucial rock sampling.
Space Exploration
‘Unsustainable’: How Satellite Swarms Pose a Rising Threat to Astronomy
SpaceX and other companies are still struggling to make their satellites darker in the night sky
Astronomy
Costly SOFIA Telescope Faces Termination after Years of Problems
NASA and the German space agency ground the telescope on a plane, citing the astronomy community’s concerns over cost and productivity
Planetary Science
Next Stop, Uranus? Icy Planet Tops Priority List for Next Big NASA Mission
An influential panel’s recommendation makes the ice giant a likely destination for a flagship space mission
Astronomy
Webb Telescope Reaches Its Final Destination Far from Earth
The ambitious observatory has arrived at its home—near a gravitationally stable spot called L2—for a premier view of the universe
Astronomy
Landmark Webb Observatory Is Now Officially a Telescope
The observatory has flawlessly unfurled its mirrors and sunshield—although more steps are needed before the science can begin
Astrophysics
NASA Spacecraft ‘Touches’ the Sun for the First Time Ever
The Parker Solar Probe has passed through a boundary and into the Sun’s atmosphere, gathering data that will help scientists better understand stars
Extraterrestrial Life
A Mysterious ‘Alien Beacon’ Was Actually a False Alarm
The radio signal seemed to originate from the star Proxima Centauri and provided a helpful drill for future searches
Planetary Science
Lucy, the First Mission to Jupiter’s Asteroids, Could Reveal Solar System Origins
The NASA spacecraft will loop past the never before explored Trojan asteroids during a 12-year journey
Astronomy
NASA Won’t Rename the James Webb Space Telescope—and Astronomers Are Angry
The agency found no evidence that the flagship observatory’s namesake was involved in anti-LGBT+ activities, but some say that Webb bears responsibility
Planetary Science
Success! Perseverance Mars Rover Finally Collects Its First Rock Core
The mission is living up to its name, drilling and storing a Martian rock after a misstep in August
