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

The interstellar comet 3I/Atlas is the fastest and largest of its kind, giving astronomers a rare glimpse into extrasolar ...

The NASA-funded ATLAS (Asteroid Terrestrial-impact Last Alert System) survey telescope in Rio Hurtado, Chile, first reported observations to the Minor Planet Center of comet 3I/ATLAS on July 1, 2025.

For only the third time in history, astronomers have detected a new interstellar visitor — an object from another star — blitzing into our solar system.

The object gained an official name, C/2025 N1 or 3I/ATLAS, on Wednesday. Moving at a record-setting speed for an interstellar ...

The discovery was announced by the Minor Planet Center of the International Astronomical Union, an international organization of astronomers, and detailed in a study posted on the open-access ...

The International Astronomical Union’s Minor Planet Center added 2017 OF201 to its database last week. Five other dwarf planets are officially recognised: Pluto, Eris, Ceres and two others ...

U.S. astronomers hunting for "Planet Nine" have instead stumbled on what appears to be a new dwarf planet in the solar system's outer reaches.

2017 OF201 was found in archival telescope observations and officially named by the International Astronomical Union's Minor Planet Center. Most fascinating about the object, perhaps, is its ...

Scientists have discovered a new dwarf planet candidate far beyond Pluto in the solar system. Its existence could mean there's no Planet 9.

The minor world is dubbed 2017 OF201; the International Astronomical Union’s Minor Planet Center added the object to its catalog on May 21.