SUNSET: 
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.
Amazing Views From Artemis 2’s Historic Lunar Flyby
The Artemis 2 crew set records and provided amazing views — with more to come — as they journeyed around the Moon.
This Week's Sky at a Glance, April 3 – 12
Arcturus, the Spring Star, is on its way up in the east. Vega, the Summer Star, rises later in the evening. Jupiter shines high toward the southwest.
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.
Artemis 2 Mission Launches for Trip Around the Moon
NASA’s Artemis 2 mission has departed Earth, as humans return to cis-lunar space after more than 50 years.
Astronomers Play April Fool’s
From pizza "flavor zones" around stars to therapy sessions for black holes, astronomers are in fine form on this April 1st.
Have We Found the Black Hole Desert?
Astronomers disagree on whether they’ve found evidence that stars don’t make certain sizes of black hole.
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.
April Podcast: Spotlight on Gemini
This month’s episode showcases the stars and planets visible on April evenings. We’ll explore full-Moon quirks; spot Venus and Jupiter after sunset; learn about Gemini, the celestial twins; and hunt for meteors toward month’s end. So grab your curiosity, and come along on this month’s Sky Tour.
White Dwarf Discovered Gobbling Material from Gamma Cassiopeiae
Powerful X-rays from the nearby naked-eye star Gamma Cas mystified astronomers for decades. Now, a new observatory reveals that they come from its white dwarf companion.
This Week's Sky at a Glance, March 27 – April 5
Winter's gone, but the Winter Hexagon remains (for now). Trace out this gigantic asterism right after dark before it sinks. Jupiter glares inside its top.
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.
Brown Dwarfs Dance Unexpected Tango
Two brown dwarfs are whipping around each other in a tight tango — an unexpected dance for objects that are not-quite-stars and not-quite-planets.
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.
This Week's Sky at a Glance, March 20 – 29
The waxing Moon grows along the horns of Taurus, then passes first quarter as it bunches up with Jupiter and the heads of the Gemini twins.
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.
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.
