The third known visitor from another star system, Comet 3I/ATLAS, has been racing through the Solar System with just enough ...
In late November 2025, astronomers captured an unprecedented cosmic signature: the first X-ray emissions ever detected from ...
Astronomers studying the interstellar object known as 3I/ATLAS say new observations from the Gemini North Telescope in Hawaii have revealed a striking chemical transformation as the comet exits the ...
Astronomers have been scanning the skies for alien radio signals for decades, but so far they’ve heard nary a peep (with one possible exception). But according to a recent study, that could be because ...