James Webb Space Telescope Uncovers Hundreds of Galaxies in Early Universe
In the JWST version of the Hubble Deep Field, astronomers are discovering what galactic life was like in the earliest years of the universe.
We Could Soon “Hear” the Gravitational Waves of Dying Stars
Massive, dying stars — behemoths tens of times the Sun's mass — should emit gravitational waves that we can hear with LIGO.
The Sun Gets Its Close-up: Images from New Solar Telescope
The Daniel K. Inouye Solar Telescope shows some stunning detail on the Sun, including sunspots, fibrils, granules, and other solar textures.
Replay of Star’s Death Sheds Light on Universe’s Expansion
A cosmic lens magnified the light of an exploding star. Now, astronomers are using observations of that supernova to calculate the universe’s current rate of expansion.
New Photos from NASA's Perseverance and Juno
NASA spacecraft are constantly sending back images from across the solar system. Here are two that caught our eye.
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.
Astronomers Find the Remains of the Universe’s First Stars
The first stars are too faint and far away to detect directly, but their gaseous remains can be seen absorbing the light of distant galaxies.
Celebrate Astronomy Day This Weekend!
On Saturday, April 29, 2023, come out and celebrate Astronomy Day! Here are some easy ways that you can explore the sky.
James Webb Space Telescope Captures Another Ringed Planet
Webb has returned an image of ringed Uranus, currently experiencing the dog days of northern hemisphere summer.
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.
This Galaxy Is Powerful, But Lonely Too
A large elliptical galaxy spewing a black hole–powered jet might have eaten its neighbors, leaving it on its own.
Finally! Scientists Find Active Volcano on Venus
After decades of searching, scientists have finally found a clear sign of active volcanism on Venus.
Watch the Milky Way’s Black Hole Spaghettify a Cloud
Two decades of observations show a dusty gas cloud elongating as it approaches our galaxy's supermassive black hole.
Satellite Trails Mar Hubble Images
An accounting of satellite streaks across two decades of Hubble Space Telescopes finds their appearance is increasing.
Generations of Stars Shape Their Galaxies, Webb Images Reveal
James Webb Space Telescope images reveal an intricate network in nearby galaxies, influenced by generations of star formation.
“The Sparkler” Might be Our Milky Way’s Long-Lost Twin
Astronomers are using compact groups of stars to probe the history of a galaxy in the adolescent universe dubbed "The Sparkler."
Hubble and Webb Image Galaxies’ Lost Stars
Deep images of galaxy clusters reveals the light of wandering stars. What set these stars free from their hosts?
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.
A 3D Magnetic Map of the Local Bubble
Astronomers have mapped the magnetic field along the "bubble" of gas 1,000 light-years wide around the Sun.
The James Webb Space Telescope Is Finding Too Many Early Galaxies
Images and spectra from the James Webb Space Telescope suggest that the first galaxies in the universe are too many or too bright compared to what astronomers expected.