Hubble Space Telescope images of interstellar comet 3I/ATLAS are out! These were taken 5 hours ago. Plenty of cosmic rays peppering the images, but the comet's coma looks very nice and puffy.

Comet C/2024 G3 (Atlas) is visible over a rural area near Firmat, Argentina on Jan. 20, 2025. | Credit: Patricio Murphy/SOPA Images/LightRocket via Getty Images ...

Some astronomers believe comets brought water and organic compounds — aka the building blocks of life — to early Earth. As 2024 came to a close, the tally of known comets had risen to about 4,000.

Rings of comets have been discovered around 74 alien star systems, revealing not only the existence of trillions of icy exocomets, but also the source of most of the water in these systems.

By far the most famous comet is Halley’s. With a 76-year orbit, it has made many recorded visits to the inner Solar System, including the portrayal of its 1066 visit in the Bayeux Tapestry. Many ...

The First Public Images and the Future of Solar System Exploration On June 23, Rubin will reveal its first public images during a special event called the “First Look.” ...

CLEVELAND — A three-mile wide comet named “NEOWISE” lit up the sky early Tuesday morning. Photojournalist Mike Vielhaber and traffic reporter Jon Rudder were some of the lucky few who woke ...

At least eight comets will be visible in the Northern Hemisphere in 2025. Here's where and when to look and which ones you can see with the naked eye.

Debris from one of the most famous comets is about to speed across the night sky. The Eta Aquarid meteor shower is expected to reach its peak on Sunday, according to the Old Farmer’s Almanac ...