Isotopic fingerprints in lunar, terrestrial, and meteorite samples show Theia formed in the inner Solar System, likely near ...

C/2025 K1 (ATLAS) has broken into three distinct pieces following its closest approach to the sun on Oct. 8. Astronomers have ...

Uncover the secrets of Comet 3I/ATLAS, the rare interstellar visitor of 2025. Learn its alien origins, ancient chemistry, and ...

Learn about the solar system in our new What If song. Explore planets, moons, and cosmic wonders through music and imagination. Washington Post editorial says Mamdani 'drops the mask' after election ...

NASA released new images of 3I/ATLAS, the third comet ever to be discovered in Earth's cosmic neighborhood originating from ...

Earth, they're usually referring to the brief window between planetary formation and the moon-forming impact.

"Even though it's the first time we've seen a galaxy like this, we think that there could be many more out there." ...

This week, we present three dazzling astrophysical images from three different observatories, along with two pictures of Mars ...

Agency officials said data showed nothing unusual about Comet 3I Atlas despite weeks of speculation that it was a UFO.

Meet 3I/ATLAS — an object from another star that's breaking all the rules. ‘Not Constitutional’: Trump Threatens Blue Slip Suit Huda Beauty pulls partnership with 'Love Island USA' star Huda after ...

The dominant nuclear fusion process within the sun's core is the proton-proton (p-p) chain. This multi-step process converts hydrogen nuclei (protons) into helium nuclei, releasing a tremendous amount ...

New research on icy moons was conducted. The study suggests that some icy moons in our solar system may have subsurface ...