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 ...

Less than a year ago, astronomers discovered a comet soaring through our sky that was not from our solar system. Although we ...

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 ...

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.

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

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

Scientists studying 3I/ATLAS have detected unusually high levels of heavy water, indicating it formed in an extremely cold ...