This week, just days before Christmas, the interstellar comet 3I/ATLAS will make its closest approach to planet Earth – so close, that anyone with a "powerful amateur" telescope might see it. Here's ...

Add Yahoo as a preferred source to see more of our stories on Google. Interstellar comet 3I/ATLAS streaks across the sky with a blue plasma tail, photographed from June Lake, California, on December ...

Add Yahoo as a preferred source to see more of our stories on Google. A mysterious interstellar visitor traipsing through our solar system known as 3I/ATLAS has captivated the public for months, and ...

Comet 3I/ATLAS—the third interstellar object ever known to pass through our solar system—is accelerating and now approaching its closest point to Earth. “Significant” non-gravitational accelerations ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. A deep image of interstellar Comet 3I/ATLAS captured by the ...

NASA's Hubble Space Telescope and an ESA orbiter bound for Jupiter both recently glimpsed 3I/ATLAS. The comet will make its closest approach to Earth in December but poses no threat and is not visible ...

NASA will livestream new 3I/ATLAS images today, Wednesday, Nov. 19, 2025, amid increased public interest in the mystery of the interstellar object after Harvard University astrophysicist Avi Loeb ...

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

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 ...

A team of astronomers found no radio signals from the comet that would suggest it is an extraterrestrial spaceship. The comet was confirmed in July 2025 as the third known object to enter our solar ...

Is 3I/ATLAS just a comet — or an intergalactic ark? A NASA spacecraft has discovered organic chemicals on 3I/ATLAS, which Harvard scientist Avi Loeb claims raises the possibility that the comet is an ...