The often controversial Harvard astronomer Avi Loeb, fresh from speculating whether interstellar comet 3I/ATLAS could be an alien spacecraft, is back pointing at another unusual comet and asking ...

3I/ATLAS interstellar comet, first photographed from Mars orbit in October 2025, carries water ice with deuterium levels more than ten times higher than any solar system comet. The James Webb Space ...

Add Yahoo as a preferred source to see more of our stories on Google. A deep image of interstellar Comet 3I/ATLAS captured by the Gemini Multi-Object Spectrograph (GMOS) on Gemini South at Cerro ...

Add Yahoo as a preferred source to see more of our stories on Google. Those concerned that 3I/ATLAS' arrival to our solar system meant that some sort of alien invasion was imminent can breathe a sigh ...

An instrument aboard NASA’s Europa Clipper spacecraft captured rare ultraviolet observations of an interstellar comet while Earth-based telescopes were blinded by the Sun. The spacecraft’s unique ...

Astronomers say 3I/ATLAS offers a rare glimpse into material formed around another star, providing data that could reshape how scientists classify comets beyond our Solar System. When Comet 3I/ATLAS ...

Less than a year ago, astronomers discovered a comet soaring through our sky that was not from our solar system. Although we still don't know where this interstellar object called 3I/ATLAS came from, ...

Space has a way of reminding us how little we actually know about the neighbourhood beyond our own front door. When a new visitor streaks through our solar system, scientists scramble to catch a ...

When some scientists and conspiracy theorists saw the strange trajectory of the space object 3I/ATLAS, some of them thought one thing: aliens. With a bizarre shape, an unusually precise trajectory, ...

The third confirmed interstellar body to visit our solar system is being revealed as a time capsule from a very different part of the Milky Way. In a new study, astronomers report comet 3I/ATLAS, ...

Astronomers found no radio signals from the comet that would suggest it is an extraterrestrial spacecraft. 3I/ATLAS was confirmed as the third known object to enter our solar system from interstellar ...