Comet 3I/ATLAS, an object from another star that was found speeding through our solar system last summer, is now fading from ...

An interstellar comet changed its chemistry after passing the Sun, revealing hidden layers and a surprising mix of carbon ...

Usually, comets are dormant blocks of rock and ice. They only wake up when they get close to a star. The intense heat causes ...

IST Older Than The Sun? Scientists Trace 11-Billion-Year-Old ‘Alien’ Comet To A Frozen, Lonely Corner of Milky Way Comet ...

The flight of 3I/ATLAS through the solar system last year was a stroke of luck for research. The water in the object was also ...

The third confirmed interstellar body to visit our solar system is being revealed as a time capsule from a very different ...

I thought about the interstellar visitor as my daughter, wife, and I took turns dragging his wandering monster truck balloon ...

A mysterious visitor from another star system is carrying secrets billions of years old. Its composition could reveal how ...

Missing US scientists’ mystery: Harvard astrophysicist Avi Loeb urges caution regarding a series of unexplained deaths and ...

Claim of nefarious plot draws attention of lawmakers and president – but are disappearances and deaths really linked?

A new comet should be visible to the naked eye this week, but you're going to need to set an alarm to see it.