Scientists detect ultraviolet signs of water in interstellar comet 3I/ATLAS, using NASA’s Swift telescope to study its activity far from the Sun.

The Hubble Space Telescope and the Jupiter Icy Moons Explorer have captured fresh images of an interstellar comet as the ...

Comet 3I/ATLAS, a 33-billion-ton object that's older than our solar system, will make its closest approach to Earth on Friday. Scientists are ...

The mysterious interstellar comet 3I/ATLAS is making its closest approach to Earth on Friday, offering scientists a rare ...

The interstellar comet 3I/ATLAS will make its closest approach to Earth this week on Dec. 19, 2025. Here's the latest news ...

On December 19, avid skywatchers can catch a glimpse of the mysterious visitor through powerful binoculars or a telescope ...

Plasma, the electrically charged state of matter that lights up stars and neon signs, has just revealed a subtle effect that ...

The mystifying 3I/ATLAS interstellar comet is blazing toward Earth and will soon come as close to our planet as it ever will.

Comet 3I/ATLAS, a rare interstellar visitor, is visible this week as it departs the solar system, with some public events ...

After less than a year in orbit, the Southwest Research Institute-built PUNCH spacecraft have made major accomplishments, ...

This week, Earth will get its best chance to steady an interstellar comet as it makes its closest approach to the planet.

Astronomers are preparing for a rare observational opportunity as interstellar comet 3I/ATLAS approaches its closest point to ...