Measurements of this interstellar comet’s molecular makeup show an excess of heavy water molecules that is dramatically ...

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

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

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 ...

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

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.

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

A comet named 31/ATLAS was first discovered on July 1, 2025, and is located about 420 million miles away from Earth, ...

Starlight has been the key to finding thousands of exoplanets over the past decade, but researchers have found a new way to ...

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