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

I/ATLAS comet is the 3rd-ever object discovered that originated from outside our solar system. It's not a threat, approaches ...

I/ATLAS has passed its closest point to Earth, meaning we will soon lose sight of it for good. Some scientists want to send a ...

While online conspiracies swirl, comet 3I/ATLAS made a close pass by Earth on Dec. 19, giving astronomers a rare glimpse of a ...

Today is one astronomers, stargazers and alien conspiracy theorists have been waiting for: interstellar comet 3I/ATLAS is as ...

NBC News' Gadi Schwartz reports on "3I/ATLAS," a mysterious outer space object that is thought to be billions of years old, ...

The livestream will now begin Friday at 11 p.m. EST, Dec. 19 (0400 GMT on Dec. 20), weather permitting, after rain prevented ...

The comet will come much closer to Jupiter in March, zipping within 33 million miles. It will be the mid-2030s before it ...

It came from outer space. Interstellar space, to be precise. From somewhere beyond the influence of our sun, possibly from ...

Interstellar Comet 3I/ATLAS makes its closest Earth pass early on Dec. 19. Here's what astronomers know about its origin and speed.

A stray comet from another star is swinging past Earth. Discovered over the summer, the comet known as 3I/Atlas will pass ...

All year long, these moments captivated the public, demonstrated dangerous trends, and pushed research and innovation forward ...