SUNSET: 
Explaining the Odd Behavior of Interstellar Object 'Oumuamua
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.
Asteroid Analysis Reveals Prebiotic Compounds
Prebiotic compounds previously found in meteorites have now turned up in pristine samples from the asteroid Ryugu, confirming their extraterrestrial origin.
Scientists Finally Find Active Volcanism on Venus
After decades of searching, scientists have finally found a clear sign of active volcanism on Venus.
Amateur Astronomers Help Provide Uninterrupted View of Venus’s Clouds
The newest observations will help astronomers understand a planetary-scale wave in the atmosphere of our sister planet.
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.
Do Diamonds Rain on the Ice Giants?
New research shows diamonds might condense out of Neptune's mantle, but not Uranus', explaining a decades-old discrepancy.
The Aftermath of DART, Humankind’s First Planetary Defense Mission
Five new studies give a full accounting of the aftermath of the impact of NASA's DART mission on a nearby asteroid.
Astronomy in Space with David Dickinson
Small Asteroid Spotted Hours Before Demise
The swift detection of a small asteroid, and recovery of its surviving fragments, shows we’re getting better at spotting incoming objects.
How Citizen Scientists Are Monitoring the DART Impact's Aftereffects
Observers around the globe are keeping an eye on the asteroid Didymos and its moon Dimorphos to track the long-term effects of the DART mission's impact.
Astronomers Discover Unexpected Ring around Distant Dwarf Planet
There’s a strangely large-diameter ring around the outer solar system world Quaoar.
Astronomy in Space with David Dickinson
Lucy Mission Has a New Asteroid to Fly By
NASA’s Lucy mission now has a new first target of opportunity, a main-belt asteroid it will visit this November.
Understanding the Tails of Comet ZTF (C/2022 E3)
We explore Comet ZTF's remarkable trio of tails and share the latest news and photos.
Astronomers Find a Dozen More Moons for Jupiter
The discovery of a dozen new moons for Jupiter makes the king of planets the king of moons, too — at least for now.
See Comet ZTF (C/2022 E3) Dash Between Big and Little Dippers
Forget the hype and go outside to enjoy the real thing — a relatively bright comet you can see in binoculars from a dark sky.
Tiny Asteroid 2023 BU to Miss Earth
A recently discovered asteroid will pass exceptionally close to Earth on January 26th. Here's how to see it. Also, Comet ZTF (C/2022 E3) is brightening nicely, with three tails visible in binos.
The Moons of the Solar System
Not so long ago, astronomers thought only a few dozen moons orbited the planets of our solar system. Today, the total count tops 170!
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.
All Eight Planets Line Up ... Again!
Echoing summer's great arc of planets at dawn, winter presents the full octet again, this time splayed across the evening sky.
Listen to a Martian Dust Devil
The Perseverance rover on Mars has recorded a dust devil using its microphone, providing unprecedented data about these whirlwinds.
Tsunamis Carried Boulders Across Ancient Martian Ocean
Long-ago impacts tossed up the floors of an ancient ocean on the Red Planet and carried debris to the landing site of NASA’s Viking 1 lander.