Harvard astrophysicist Avi Loeb has made a kind of second career out of being the person in the room who refuses to leave “aliens” off the table. With 3I/ATLAS, only the third confirmed interstellar ...

More images have emerged of 3I/ATLAS, the interstellar visitor making headlines for its unusual behaviour. The comet, sometimes described as a ‘giant dirty snowball,’ has been observed dimming and ...

Comet 3I/ATLAS has already puzzled astronomers with its odd trajectory, twin tails and sudden bursts of activity. Now a rhythmic 16.16-hour “heartbeat” has become the latest mystery. Most researchers ...