3I/ATLAS has passed its closest point to Earth, meaning we will soon lose sight of it for good. Some scientists want to send a spacecraft to chase down the alien comet — or the next interstellar ...

The interstellar comet 3I/ATLAS could be covered in erupting "ice volcanoes," new observations suggest. Researchers found evidence that as the comet approached the sun, a series of cryovolcanoes ...

Comet 3I/ATLAS makes closest approach to Earth, 170 million miles away, offering rare insights into interstellar space and cometary formation.

Interstellar comet 3I/ATLAS will make its closest approach to Earth on Friday. New X-ray images could shed light on its composition.

I/ATLAS will pass Earth safely tonight, providing scientists with a unique opportunity to study material from outside our solar system.

Comet 3I/ATLAS is a rare visitor passing briefly through our solar system. Here’s how to find it in the night sky—and what you’ll need to catch a glimpse.