Proposed NOAA Budget Kills Program That Was Designed to Prevent Satellite Collisions
Trump’s first administration helped establish the Traffic Coordination System for Space (TraCSS). His second administration wants to dismantle it.
Astronomers Map the Cosmic Web
A 23 million light-year-long gaseous filament and 39 bursts of radio waves are helping astronomers chart the universe's largest-scale structures.
Giant Gas Cloud Discovered 300 Light-Years from Earth
Astronomers have just spotted for the first time a huge cloud of cold hydrogen gas just 300 light-years from Earth.
Rare Interstellar Comet Buzzes Solar System
A newfound comet from a remote star system may become bright enough to see in amateur telescopes this November.
This Week's Sky at a Glance, July 4 – 12
On Sunday night the Moon occults Pi Scorpii for almost all of North America. Elsewhere in Scorpius, the Cat's Eyes point side-eye to the Little Cat's Eyes.
See Multiple International Space Station Passes This Fourth of July Weekend
Early July is a great time to catch multiple passes of the International Space Station passes in a single night. Here's why.
See Dual Naked-Eye Novae, a Rare Cosmic Coincidence
What's rarer than a naked-eye nova? Having two of them at the same time!
July Podcast: Scorpius in the Spotlight
Let’s explore “what’s up” in the July sky. This month we’ll check on the planets' whereabouts, go on a "sat-seeing" tour, and chase down one of best know celestial critters: Scorpius. So grab your curiosity, and come along on this month’s Sky Tour episode.
Jellyfish Galaxy Sheds Spiral Arms in “Bunny Ear” Tails
Astronomers have imaged a "jellyfish" galaxy in detail, revealing that its spiral arms now drag behind it as a pair of tails.
Exploding Fireball Drops Meteorites Over Georgia
Space rocks pelt Georgia after Thursday's thunderous bolide.
James Webb Space Telescope Discovers Its First Planet
The Saturn-mass planet candidate is probably newly formed and orbits a young star that's only 6.4 million years old.
This Week's Sky at a Glance, June 27 – July 6
Mercury, Regulus, and Mars drift apart as they descend in the western twilight. After dark, check out double stars in the head of Scorpius. . . where occultation action is coming up.
Explore June's Dusky Crescent Moon
The Moon returns to the evening sky this week to show off its elegant crescent and invite us to tour its nightside.
Light Pollution: What Is Brightening Our Night Skies?
Walking through neighborhoods, volunteers identified sources of light pollution —surprisingly, streetlights weren’t the main culprit.
Vera C. Rubin Observatory Releases Long-Awaited First Photos
We're now seeing the first images after years of effort and frantic last-minute fixes that pushed the new observatory to completion.
Swim Through Images from NASA's SPHEREx Observatory
Images from a unique new space observatory are in, showcasing its potential for exploring the universe near and far.
This Week's Sky at a Glance, June 20 – 29
With summer finally here, summery Scorpius awaits you as night grows late. The Moon prepares to molt from old to new and greet Mercury in twilight.
Bright Nova Lights Up Lupus Constellation
A newly-discovered nova in Lupus is on the rise and approaching naked-eye visibility. Here's how to see it.
“Shattering” NSF Budget Proposal Threatens Gravitational Wave Science
One of two Nobel Prize-winning LIGO sites is on the budgetary chopping block.
Silicate Clouds and a Dusty Disk in a Multi-Planet System
James Webb Space Telescope observations of two young planets 326 light-years away show a series of surprises.
