NASA STEREO-A satellite's SECCHI/HI-2 camera captured this imagery of Comet C/2021 A1 (Leonard) Credit: Space.com | footage ...

The ion tail appeared as Comet C/2025 R3 PanSTARRS was about 45 million miles from Earth (72 million kilometers) during its ...

The Eta Aquarid meteor shower brings shooting stars before dawn, the Moon meets brilliant Venus after sunset, and May wraps up with a rare Blue Moon. Look to the early morning sky around May 5-6 for ...

The Eta Aquarid meteor shower brings shooting stars before dawn, the Moon meets brilliant Venus after sunset, and May wraps up with a rare Blue Moon.

That activity was Comet C/2025 R3, which recently made its closest approach to both Earth and the sun. In footage posted by ...

Astronomers analyzed the vapors coming off the comet when it neared the sun and found it had a lot of "heavy" water. That ...

The comet that rambled past us from another star last year likely originated in a cold, isolated corner of the galaxy that ...

"Each interstellar comet brings a little bit of its history, its fossils, from elsewhere." ...

Comet C/2025 R3 (PanSTARRS) is brightening in the night sky in April. Here's when and how to see the buzzworthy celestial show.

A comet named 3I/ATLAS was first discovered on July 1, 2025, and is located about 420 million miles away from Earth, ...

Measurements of this interstellar comet’s molecular makeup show an excess of heavy water molecules that is dramatically ...

Amentum is hiring roughly 100 workers for its COMET contract with NASA for Artemis missions at Kennedy Space Center, with a ...