Discover how scientists are using Martian orbiters to track its path and what its mysterious radio signals reveal about its ...

Perihelion is the point on an orbital course that brings a body closest to the sun. C/2025 K1 (ATLAS) is an Oort cloud comet ...

The interstellar visitor posed no threat to our planet, but experts thought it could fight dangerous asteroids looking to strike us.

Learn what makes Comet 3I/Atlas, the third interstellar object ever observed entering into our solar system, so significant ...

Scientists have confirmed that comet 3I/Atlas is visible again following its close approach to the Sun, sparking fresh interest in the mysterious object.

What: Comet 3I/ATLAS reached perihelion on October 30, 2025. This special SETI Live explored what scientists have learned about its origin, chemistry, and trajectory ...

NASA and the European Space Agency (ESA) will continue to track 3I/ATLAS as it moves toward Jupiter by March 2026. Scientists ...

Astronomy enthusiasts and skywatchers alike have a reason to look up this December, as Comet 3I/ATLAS, a rare interstellar ...

The interstellar comet 3I/Atlas reached its closest point to the sun. Here's how to follow the rest of its journey away from ...

The comet is the third interstellar object from deep space ever recorded to pass through Earth's solar system.

The effort to monitor the comet, estimated to be the size of a city block, was spurred on by Harvard astrophysicist Avi Loeb, a vocal proponent of the theory that 3I/Atlas could have an ...