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

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

I/ATLAS has now made its closest approach to the sun and Earth and is now heading back out toward the outer solar system.

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

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

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

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

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

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

The popular interstellar comet 3I/ATLAS made its closest approach to Earth on December 19, 2025, and is now moving away ...

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 ...