I/ATLAS interstellar object has shifted from red to green-blue glow, produced an anti-tail, and revealed unusual gas ...

The Gemini South Telescope in Chile has captured the new evidence, discovering the comet nature of the interstellar 3I/ATLAS ...

Interstellar object 3I/ATLAS shows an unexpected frontal glow that Harvard's Avi Loeb says cannot be explained by sunlight reflection or standard cometary outgassing.

Sean O'Driscoll is a Newsweek Senior Crime and Courts Reporter based in Ireland. His focus is reporting on U.S. law. He has covered human rights and extremism extensively. Sean joined Newsweek in 2023 ...

WARSAW, PolandWARSAW, Poland — Russia will not provide any explanations about an unidentified object that briefly entered Poland’s airspace until it receives evidence that shows the object was a ...