SUNSET: 
Dark Matter Clumps Float Between Galaxies, Data Shows
Astronomers have found clumps of dark matter 30,000 light-years wide in the space between galaxies in the distant universe.
What Mud Cracks Mean for Life on Mars
Mud cracks are evidence for sustained wet-dry cycles on ancient Mars, which might have provided conditions amenable to life (with caveats).
Some Astronomers Claim Dark Star Candidates in Webb Images
Three distant galaxies imaged by the James Webb Space Telescope might actually be "dark stars" powered by dark matter annihilation, claims a team of astronomers.
Perseverance Finds Complex Organics (Not Life) on Mars
NASA's Perseverance has sniffed 10 rock samples and found signatures of organic molecules, a sign of a complex geochemical past.
NASA Panel Talks Unidentified Anomalous Phenomena
NASA has held its first public meeting with its panel investigating Unidentified Anomalous Phenomena. The panel will publish a full report in July.
Distorted Galaxy Hints at the Nature of Dark Matter
Astronomers analyzed the gravitationally lensed image of a distant galaxy to test the nature of dark matter.
What the Discovery of Massive Early Galaxies Could Mean for Cosmology
JWST's detection of early galaxies that are far more massive than astronomers had expected could mean we need to rewrite our understanding of the cosmos.
The Odd Behavior of Interstellar Object 'Oumuamua, Explained
It wasn't aliens after all — an astrochemist and an astronomer have teamed up to explain why the interstellar object 1I/'Oumuamua behaved the way it did.
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.
What Is the Sun Made Of? New Data Deepens Debate
New data from a detector tucked under a mountain in Italy has shed light on what's inside the Sun.
Webb's Galactic Distance Record Is Now Official
Spectroscopic measurements confirm Webb's distance record, with images revealing galaxies that existed just 330 million years after the Big Bang.
Arecibo Legacy: New Data on Near-Earth Asteroids
The largest set of radar data for near-Earth asteroids will help us understand their origins and protect Earth from future impacts.
Astronomers Map the Milky Way's "Underworld"
A simulated map of the Milky Way shows the location of our galaxy's stellar corpses — and they're not where you might think they'd be.
Betelgeuse's Great Dimming: The Aftermath
The Great Dimming occurred when Betelgeuse coughed out a huge chunk of material, and the ejection took a toll on the giant star.
Asteroid Ceres Was Radioactive — and That Could Explain a Lot
Radioactive heating in this asteroid's early days may have destabilized the small world, creating asymmetric surface features.
A Black Hole Lurks in a Galaxy Near Our Own
Astronomers have found a dormant black hole orbiting a massive blue star in the Large Magellanic Cloud, a satellite galaxy of the Milky Way.
Have We Found the First Rogue Black Hole in the Milky Way?
Hubble observations have revealed a stellar-mass compact object — a black hole or possibly a neutron star — wandering our galaxy.
Mystery of the Sun's Chemical Makeup Lingers
Astronomers think they might have a solution to the conundrum of the Sun's chemical composition.
Icy Moon Europa May Host Water Near the Surface
Radar measurements of ice on Earth suggest that Jupiter's moon Europa might host water near its surface.
Summer on Neptune is Surprisingly Chilly
Even though Neptune is entering its version of summer, it's actually cooling down — except for its poles, which are mysteriously warming up.
