Data from NASA’s Chandra X-ray Observatory and NASA’s James Webb Space Telescope combine to reveal an otherworldly view of ...

By early December, 3I/ATLAS will move away from the Sun’s vicinity, and its glare, and will be visible again in the Northern ...

A Mount Everest–sized asteroid wiped out the dinosaurs, triggering global wildfires, tsunamis, and a nuclear winter before ...

Contextualizing speed and distance helps set expectations. Around perihelion, 3I/Atlas is moving at roughly 68 km per second. Its closest approach to Earth is about 1.8 AU, near December 19, which is ...

NASA's Double Asteroid Redirection Test (DART) impacted the 'moonlet' Dimorphos in the Didymos asteroid system. The Les Makes ...

Contrary to allegations that 31/ATLAS is potentially hostile alien tech, the Manhattan-sized comet could provide potentially ...

These rare samples, uncovered on the moon by China’s Chang’e 6 mission, might help to reveal secrets of how the solar system ...

About 66 million years ago, an asteroid slammed into what is now Mexico, forming the Chicxulub crater. This impact wiped out ...

As 3I/ATLAS approached the inner solar system in September, the Nordic Optical Telescope in Spain's Canary Islands recorded a ...

No, NASA didn’t confirm a second moon, but scientists did discover something else that’s been traveling with Earth for ...

The universe has quasi-moons, mini-moons, and moonlets, but no official definition of what counts as a moon.

The comet, called 3I/ATLAS, is the third known interstellar object that has come through our solar system. As it flies deeper ...