The comet, discovered in July 2025, originated far beyond our Solar System and is thought to be around 7 billion years old - ...

It’s a practice run for armageddon. With 3I/ATLAS days away from making its closest approach to Earth, agencies worldwide are conducting the largest and most extensive planetary defense drill — with ...

The vast, silent expanse of our solar system has just played host to a visitor from the deepest reaches of the galaxy, and it is proving to be unlike anything astronomers have ever witnessed. While ...

A deep image of interstellar Comet 3I/ATLAS captured by the Gemini Multi-Object Spectrograph (GMOS) on Gemini South at Cerro Pachón in Chile, one half of the International Gemini Observatory and ...