SUNSET: 
Did A Moon-Size Planet Grow Fast and Die Young in the Early Solar System?
A rare meteorite recovered from the Sahara Desert could be a fragment of a Moon-size body that met a violent end in the earliest days of the solar system.
Evidence of Water Plumes from Jupiter's Moon Europa Vanishes
Reanalysis shows that the Hubble Space Telescope's detection of water vapor escaping from Jupiter’s moon Europa might have been a glitch.
NASA's Psyche Sends Back Amazing Images of Mars
NASA’s Psyche asteroid mission made a course adjustment via a flyby past Mars en route to its final destination. Here's what it saw.
Nereid Could be Neptune’s Only Original Moon
New research suggests that Triton — or a Triton-like object — might have disrupted Neptune's original moon system. Nereid might be the sole survivor.
How Jupiter’s Moon Ganymede Melted Its Core
A new model explains how Ganymede got its molten core — which in turn has given Jupiter's largest moon its magnetic field.
Astronomers Find Atmosphere Around a Pluto-like World
Observations — including from an amateur astronomer — show that the Plutino 2002 XV93 has a thin wisp of air around it.
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.
Satellite or Meteor? Dissecting Light Trails in Your Sky Photos
Here's a quick guide to tell meteors from machines in your wide-field images of the night sky.
Curiosity Team Hits Jackpot: A Sample Full of Complex Organic Molecules
Scientists have identified at least seven carbon-rich molecules that NASA's Curiosity rover detected on Mars, and they're more complex than any found before.
Uranus’s Outermost Rings Are Made of Two Different Things
The James Webb Space Telescope has taken a deep look at the rings around the ice giant Uranus and found a new mystery to be solved.
Sun-Observing Satellite Uses Artificial Eclipse to Capture the Solar Wind
The Proba 3 mission flies two spacecraft in precise formation to create an artificial eclipse and obtain close views of the solar wind as it leaves the Sun.
What Were the Flashes That Artemis 2 Astronauts Saw?
The crew of Artemis 2 reported six flashes of light while passing behind the Moon. We've seen those kinds of flashes before.
Do Look Up: Asteroid Apophis Will Fly By Earth in Three Years
The close pass of Apophis is nothing to fear. Will you be watching on Friday, April 13, 2029, when this asteroid glides across the sky?
Rubin Observatory Announces 11,000 New Asteroids
The Vera C. Rubin Observatory will discover up to 500,000 solar system objects every year. It’s already starting to deliver on that promise.
Do the Moon’s Poles Hold Less Water Than We Thought?
New observations reveal that permanently shadowed regions at the lunar poles might contain less water ice than astronauts were hoping for.
Dawn Comet C/2025 R3 (PanSTARRS) May Hold a Surprise
If we're lucky, we'll soon have bright comets at both dawn and dusk.
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.
Comet Break-Up Caught In Action
The Hubble Space Telescope caught a long-period comet breaking up just after it passed the Sun.
Many Waters May Have Mixed on Mars
New analysis shows alkaline and acidic water may have mixed beneath the Martian surface, creating an environment that could theoretically have supported life.
NASA Has Cracked the Mystery of Asteroid Bennu’s Boulders
A new analysis of samples from the asteroid Bennu has solved a long-standing mystery: Cracks in the boulders strewn across its surface masquerade as sand.
