Astronomy

A thin crescent moon and dark skies could give watchers a clear view of this astronomical event

The same region on the sun that’s responsible for this week’s stunning auroral display just erupted in another powerful solar flare early on Friday morning

Centuries before other galaxies were known to exist, astronomers called them “spiral nebulas.” Today the defunct term still sparks confusion

A severe geomagnetic storm brought spectacular auroras to much of the U.S. on Tuesday night

The sun just spat out several coronal mass ejections that could trigger a serious solar storm on Wednesday

The first image from the Vera C. Rubin telescope reveals a previously unnoticed feature of the galaxy M61 that may explain its mysterious properties

Reflect Orbital’s plan to deliver “sunlight on demand” using thousands of giant orbital mirrors is just the latest in a growing list of disruptive commercial activities in space

A cosmic explosion known as GRB 250702B is by far the longest gamma-ray burst astronomers have ever seen—if it’s even one at all

Debris from Comet Encke creates two annual meteor showers, but it might also pose a small risk to Earth. Scientists are investigating

Astronomers are hustling to use interplanetary spacecraft to study the interstellar comet dubbed 3I/ATLAS while the sun is hiding it from Earth

New peer-reviewed research reporting strange lights in the pre-space-age sky is sparking curiosity and controversy

A comet’s brightness depends on how it’s made, how and when we see it, and even a bit of unpredictable luck