Scientists have long known that Earth's core is mostly made of iron, but the density is not high enough for it to be pure ...

For millions of years, a frozen wanderer drifted between the stars before slipping into our solar system as 3I/ATLAS—only the ...

The fate of a comet that was predicted to pass close to Earth remains a mystery five years after its dramatic breakup in the inner solar system.

A NASA spacecraft has discovered organic chemicals on 3I/ATLAS, which Harvard scientist Avi Loeb claims raises the ...

The newly discovered sungrazing comet C/2026 A1 (MAPS) will undergo an extremely close slingshot around our star in early ...

Learn about a new Kreutz sungrazing comet that could be lighting up our skies come April 2026.

Cosmic dust normally comes from dying stars. The recipe for a lab-made version includes a few gases, vacuum tubes and ...

NASA's infrared telescope SPHEREx captured stunning images of interstellar comet 3I/ATLAS as it exited the solar system.

In 1883, a comet capable of ending life on Earth narrowly missed impact. Only one man on the planet noticed, a Mexican scientist.

A doctoral student recreated a tiny piece of the universe in a bottle to investigate the chemistry that led to life on Earth.

NASA’s SPHEREx mission observed infrared emissions from interstellar comet 3I/ATLAS, documenting changes in dust, gas, and ...