SUNSET: 
Astronomers Spot Possible Missing Link to Webb’s Little Red Dots
Astronomers may have found the missing link required to understand one of the James Webb Space Telescope’s most puzzling discoveries.
Interstellar Comet 3I/ATLAS Has Cold, Ancient Origins
The most recent interstellar visitor was crisscrossing our galaxy for some 10 to 12 billion years before it came near the Sun.
Light Pollution Is Increasingly Variable Around the World
Scientists have unveiled a new dynamic view of our world at night, showing for the first time a night-by-night view of changes in light pollution.
New Astro Images: Saturn, the Crab Nebula, and a Newborn Planet
Striking images from Hubble, Webb, and the Very Large Telescope dive into Saturn's atmosphere, capture the Crab Nebula's expansion, and reveal a newborn planet.
How AI Is Reshaping Astronomy
Artificial intelligence is revolutionizing our world — and how we interpret the heavens above us.
Explore the Worlds of Project Hail Mary
When Andy Weir published Project Hail Mary, he based his novel on two worlds. We explore these planet candidates — and why they probably don’t exist.
Super-Bright Supernovae Are Birth Cries of Magnetars
The disk of gas that spirals onto a newborn magnetar wobbles, creating "bumps" in the brightness of the supernova that accompanied this object's birth.
AI Reveals New Galaxies in James Webb Space Telescope Images
Known as ASTERIS, the AI network removes noise from images to reveal features a full magnitude fainter than before.
Infant Galaxy Clusters Grew Faster Than Expected
Astronomers have discovered three still-growing galaxy clusters in the early universe that point to a faster track of evolution than expected.
What the Helix Nebula Has in Common with a Supernova Remnant
Sculpted gases in the Helix Nebula, revealed in a new Webb image, look like the firework-like tendrils in a distant amateur-discovered supernova remnant — here's why.
Watch Stellar Explosions Near and Far (Videos)
New videos from the Solar Orbiter and the Chandra X-ray Observatory capture magnetic avalanches on the Sun and the exploding remnants of a star 17,000 light-years away.
“Missing” Supernova Images Offer Measure of Universe’s Expansion
Astronomers have found two gravitationally lensed supernovae that are missing images. Those images' arrival will offer a measure of the universe's expansion.
The Schmidt System: Four New Observatories in the Next Three Years
Schmidt Sciences has unveiled details on four ambitious observatories to monitor the dynamic cosmos, with data from all four expected by 2029.
Not Every Galaxy Has a Central Black Hole
Many less massive galaxies appear to lack something astronomers thought was ubiquitous: a central, supermassive black hole.
The Sun's Poles Are Different Than We Expected
A new analysis of the Solar Orbiter's unique views of the Sun's poles shows how a "conveyor belt" moves within our nearest star.
A Super-Earth Candidate Less Than 20 Light-Years Away
Astronomers have discovered a ready-to-image super-Earth candidate less than 20 light-years away.
A “Great Wave” Is Crashing through the Milky Way
Precise measurements of stars’ motions show that a wave is propagating outward from our galaxy’s center — perhaps from a long-ago collision with another galaxy.
Early Galaxy Hosts Black Hole with the Mass of 50 Million Suns
Astronomers using the James Webb Space Telescope have confirmed that, just 800 million years after the Big Bang, there is a galaxy that contains a supermassive black hole — and not much else.
From the Sun to the Stars, Astronomy in Photos
New observations reveal turbulent flows in the supernova remnant Cassiopeia A and in the solar corona.
Mars Might Have a Surprisingly Large, Solid Core, Marsquakes Reveal
Marsquakes reveal a lumpy, viscous mantle and a large, solid inner core, with profound implications for Mars past, present, and future.
