Based on the composition of gases spewed by the icy space rock, researchers estimate that our guest might be up to 12 billion ...

A comet born around another star crossed into our solar system, accelerated to roughly 153,000 miles per hour at its closest ...

In the latest research, telescope observations of 3I/ATLAS examine its chemical structure and suggest that it took shape in a ...

PARIS, France — An interstellar comet that blazed past the Sun last year could be nearly three times older than our Solar ...

The Hubble Space Telescope image of the interstellar comet 3I/ATLAS on July 21, 2025, when the comet was 277 million miles ...

An interstellar comet that recently passed through the solar system may have formed as long as 12 billion years ago, making ...

For obvious reasons, the Sun’s influence weakens as you get closer to the edge of the solar system. But things might be a lot ...

One year ago, on July 1 2025, astronomers discovered a fascinating new object moving through the Solar System. Detected by ...

Astronomers first spotted Comet 3I/ATLAS in June 2025, and it was later confirmed as an interstellar visitor that originated ...

Interstellar comet 3I/ATLAS may be older than our solar system, offering a rare glimpse into the early galaxy.

Using carbon isotopes in the comet to estimate its age, the authors believe it may be even more ancient than earlier ...