Comet 3I/Atlas, often dubbed the “alien green comet,” is making a rare and historic flyby of Earth, drawing global attention ...

The comet's approach marks only the third known time an object from outside the Milky Way has passed through our solar system.

Interstellar visitor 3I/ATLAS, a comet from beyond our solar system, has captivated scientists and the public alike. NASA has ...

By bne science The European Space Agency's XMM-Newton space X-ray telescope has confirmed observations by Japan's Aerospace ...

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

Night sky update for December 17, 2025, covering the moon phase, visible planets, meteor showers, and key space and astronomy news from today ...

Decades ago, a spacecraft suggested Saturn's largest moon, Titan, had an ocean. New observations suggest that the liquid may ...

An interstellar object moving at roughly 137,000 miles an hour is making its closest approach to Earth this week, drawing ...

It's only the third object in history from outside our solar system to be discovered cruising through our area of space.

The comet—only the third known interstellar visitor to our solar system—will make its closest approach of the Earth this week ...

The interstellar comet 3I/ATLAS is just days away from coming as close to Earth as it will ever get. Here's how you can track it and spot it.

Denneau is part of the team behind ATLAS — short for Asteroid Terrestrial-impact Last Alert System — a network of wide-field ...