The NASA/ESA Hubble Space Telescope reobserved interstellar comet 3I/ATLAS on 30 November with its Wide Field Camera 3 instrument. At the time, the comet was about 286 million kilometers from Earth.

Interstellar comet 3I/ATLAS's first reported sighting was on July 1, and it's going to be the closest it's ever been to Earth on Friday. Along the way, it reached several milestones leading up to what ...

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 ...

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 ...

The comet originated from outside our solar system and poses no danger to our planet. NASA officials have rejected theories that the object could be an alien spaceship. While not visible to the naked ...

Scientists confirmed the object originated outside our solar system due to its high speed and trajectory. The comet poses no danger and will pass about 170 million miles from Earth. While not visible ...

Highlights from a cometary trio that captured our imaginations. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. 2025 has seen stargazers look on ...

A bevy of comets, a "blood moon" total lunar eclipse and impressive northern lights were just three of the skywatching highlights in 2025. Here's how they unfolded.

For one, it came down to timing. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. It came from outer space. Interstellar space, to be precise.

The mystifying 3I/ATLAS interstellar comet is blazing toward Earth and will in a matter of days come as close to our planet as it ever will. The impending cosmic rendezvous – if you want to call it ...