A mystery interstellar object discovered last week is likely to be the oldest comet ever seen – possibly predating our solar system by more than three billion years, researchers say. The "water ...

I/ATLAS might be over 7 billion years old, a new study reports, which would make it the oldest comet known. But experts caution we need more data.

A newly discovered comet, 3I/ATLAS, may be the most ancient visitor ever detected, potentially older than our solar system itself. Unlike previous interstellar objects, this ice-rich comet seems to ...

After defending his PhD thesis on modeling interstellar objects on Monday, June 30, Matthew Hopkins intended to take some ...

Astrophysicists suggest our galaxy may lie inside a "cosmic void" - offering a new explanation for the universe’s conflicting ...

The Milky Way could have many more satellite galaxies than scientists have previously been able to predict or observe, ...

Fresh evidence claims that the Earth and the surrounding galaxy are suspended inside a cosmic void based on echoes from the ...

Back in 2010, scientists spotted something shocking: a pair of gigantic, glowing lobes of gas bursting from the Milky Way’s ...

The third object known to have entered the Solar System from interstellar space has an origin unlike either of its ...

Astronomers have studied the globular cluster 47 Tucanae extensively, but still have many questions. It may have an ...

By looking at the shifting of stars in photos from the New Horizons probe, astronomers have calculated its position in the ...

“This pioneering interstellar navigation demonstration and its accompanying publication show that a deep-space mission can ...