Our solar system's famous "invader" might be as old as the Milky Way itself.

A new analysis of archival Hubble Space Telescope photos reveals that a peculiar comet slowed its spin before fully reversing ...

You've got time to wave goodbye to our interstellar visitor.

The comet originated in the outer solar system and visits the inner solar system every 5.4 years.

Add Yahoo as a preferred source to see more of our stories on Google. Remember 3I/ATLAS? Yes, the interstellar comet that made plenty of headlines in 2025 is still romping through our solar system.

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. A Hubble Space Telescope ...

If C/2026 A1 (MAPS) survives its close encounter with the sun, it could blaze brightly enough to be seen from Earth.

Comets are pristine remnants left over from the solar system's formation 4.6 billion years ago, rather than younger fragments created by collisions between larger bodies, a new study suggests. The ...

"Observing 3I/ATLAS is like taking a fingerprint from another solar system." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Breaking space news, ...

The observation was described on March 26 in the Astronomical Journal. Nine years ago, comet 41P/Tuttle-Giacobini-Kresák—41P ...

Scientists captured a comet breaking apart in real time, offering a rare look at ancient material hidden inside these icy ...

Remember 3I/ATLAS? Yes, the interstellar comet that made plenty of headlines in 2025 is still romping through our solar system. But it may not be around much longer. The otherworldly visitor to ...