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.

Here's how to see Comet PanSTARRS in satellite images ahead of its close approach to Earth on April 26.

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 ...

Comets are loose collections of ice, dust and frozen gases left over from the solar system's formation 4.6 billion years ago.

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 ...

NASA and the European Space Agency spotted a cosmic object that was splitting apart before it exploded, something not a ...

NASA has tested a lithium-fed thruster that could become a workhorse for future Mars missions, and the key milestone is not ...