An interstellar comet that passed through the Solar System last year may be up to 12 billion years old – far older than the sun. Scientists used the NASA/ESA/CSA James Webb Space Telescope to examine ...

Strange interstellar comet speculated to be alien spacecraft is older than Solar System - Scientists say comet represents preserved fragment of ancient planetary system ...

Comets have played an interesting role in the history of astronomy. Since antiquity, many cultures saw them as omens or ...

It was initially thought to have formed between three and 10 billion years ago, but researchers have now found that it could be even older, originating from an ancient planetary system nearly 12 ...

PARIS, France — An interstellar comet that blazed past the Sun last year could be nearly three times older than our Solar System and is unlike anything ever before seen in our cosmic backyard, ...

Exactly where the comet 3I/ATLAS came from within the Milky Way remains a mystery.

One year ago, on July 1 2025, astronomers discovered a fascinating new object moving through the Solar System. Detected by the Asteroid Terrestrial-impact Last Alert System (ATLAS), the object was ...

SETI researchers found no alien signals on interstellar object 3I/ATLAS, but the study refines future searches and expands understanding of interstellar visitors.

JWST detected rising methane emissions from interstellar comet 3I/ATLAS, exposing ancient interior ice and offering new ...

Mission to investigate whether tiny organisms live in ocean volcanoes on icy Enceladus planned by European Space Agency ...