SUNSET: 
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.
Rubin Observatory Detects Record-Breaking Asteroids
The Rubin Observatory has detected thousands of new asteroids, including several that spin a lot faster than expected for typical rubble piles.
Latest News on the Kreutz Sungrazing Comet C/2026 A1 MAPS
As the comet prepares for its perilous perihelion passage, we look at what to expect.
Asteroid Ryugu Also Contains Life’s Building Blocks
Samples returned from Ryugu contain all five nucleobases, just like from asteroid Bennu. The find suggests life’s ingredients could have come from outside Earth.
The Solar Cycle Leaves Its Fingerprint on the Sun’s Interior
Astronomers have used 40 years’ worth of data to peer inside the Sun, revealing that the solar cycle can leave a distinct fingerprint beneath the visible surface.
Asteroid Didymos's Heliocentric Orbit Altered by Impact on its Moon
Dozens on amateur astronomers helped measure the minuscule difference in Didymos’s trajectory around the Sun, after NASA’s DART mission impacted its moon.
Lunar Impact from Asteroid 2024 YR4 Ruled Out
The latest JWST images, along with archival images taken before the asteroid was even discovered, combine to refine its trajectory.
Dawn Delight: Total Lunar Eclipse on March 3rd
March opens with a spectacular total lunar eclipse. Our guide will help you make the most of it.
Comet 29P/Schwassmann-Wachmann Bursts as "Ice Volcano" Erupts
After a recent explosive outburst, Comet 29P/Schwassmann-Wachmann is bright enough to see in a medium-sized telescope.
Oldest Moon Rocks Found on the Lunar Farside
The 4-billion-year-old Moon rocks brought back from the farside of the Moon challenge ideas about what it was like in the early solar system.
New Kreutz Comet C/2026 A1 May Dazzle
A distant Kreutz comet heading our way may grow a glorious tail in April.
Hundreds of Bright Streaks Suggest Mercury’s Still Active
An AI search through decades-old spacecraft images reveals that Mercury may still be alive and kicking, geologically speaking.
Scientists Measure Mars's Effect on Earth's Climate
Tiny Mars might have an outsize effect on Earth's climate over hundreds of thousands of years.
Martian Moon Deimos Might Have Reshaped Itself and Its Orbit
A new study suggests that an early version of Mars’s smaller moon Deimos was pulverized by its own debris, explaining the moon's oddities.
Big and Bright, Jupiter Beckons in January
Jupiter's having a special moment! Don't miss the giant planet at its best when it reaches opposition this week.
New Radar Data Chills Prospects of a Subglacial Lake on Mars
There could be liquid water trapped under the southern polar cap of Mars. But new observations suggest otherwise.
Scientists Map the Sun’s Magnetic “Surface”
Where does the Sun end and the solar wind begin? Scientists have mapped the dynamic magnetic edge that bounds our star.
Geminid Meteor Shower Peaks December 13-14
Great news! We'll have dark skies for the year's richest meteor shower.
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.
Tiny Sparks of Lightning Detected on Mars for the First Time
The microphone on NASA's Perseverance rover unexpectedly heard tiny claps of thunder from sparks caused by colliding dust grains.
