Add Yahoo as a preferred source to see more of our stories on Google. Today is the day that astronomers, amateur stargazers and alien conspiracy theorists alike have been waiting for: interstellar ...

At the ragged frontier where the Sun’s influence gives way to interstellar space, Voyager 1 has stumbled into something that sounds more like science fiction than plasma physics: a blisteringly hot ...

Add Yahoo as a preferred source to see more of our stories on Google. Hubble captured this image of the interstellar comet 3I/ATLAS on July 21, 2025, when the comet was 277 million miles from Earth.

The interstellar comet 3I/ATLAS was the third object ever discovered in our solar system that originated from another star system. Despite a viral conspiracy theory, NASA officials have repeatedly ...

Comet 3I/ATLAS recently emerged from behind the glare of the sun to become visible to ground-based telescopes. When you purchase through links on our site, we may earn an affiliate commission. Here’s ...

An ancient comet discovered in our solar system this summer is offering a rare opportunity to learn more about distant planetary systems far beyond the reach of any spacecraft, researchers say. The ...

Mysterious interstellar object 3I/ATLAS made its closest approach to Earth on December 19, coming within just 167 million miles. Scientists have been closely monitoring the object — which is largely ...

The interstellar comet 3I/ATLAS was the third object ever discovered in our solar system that originated from another star system. Despite a viral conspiracy theory, NASA officials have repeatedly ...

Interstellar comet 3I/ATLAS made its closest approach to Earth on Friday, Dec. 19. The comet will pass within about 170 million miles of our planet and poses no danger. While not visible to the naked ...