Data captured by a robotic telescope indicate the ion tail now extends a minimum of 0.7 degrees toward the northeast.

The interstellar comet has reappeared after months hidden behind the sun, offering astronomers fresh clues about how comets ...

To reach Earth’s closest star system, Alpha Centauri, scientists are building a laser-powered spacecraft. To pull off ...

I/ATLAS could have exploded near the Sun if it is a comet, explaining the sudden brightening and the shooting jets observed recently. However, in case it didn't, then it might point to the theory ...

A new study has an explanation for the unusual chemical makeup of our interstellar visitor. If true, it's not the best news we've ever heard.

With SpaceX and other agencies eyeing missions to Mars in the future, sustaining astronauts on these long-distance voyages ...

In late October, 3I/Atlas disappeared from view as it reached perihelion—the point of its closest approach to the Sun. At ...

I/ATLAS recently passed its closest point to the sun. Because of its unusual behavior, some scientists are wondering if it's ...

I/ATLAS Turns Blue reveals a shocking new phase in this interstellar visitor’s journey as new images rewrite comet science ...

Astronomers have spotted 3I/ATLAS, a mysterious interstellar object showing possible engine-like propulsion signs. Experts ...

Comet 3I/ATLAS is only the third confirmed interstellar object ever spotted, travelling over 130,000 mph and carrying chemical signatures older than our Sun ...

An astronomer has snapped comet 3I/ATLAS using the Lowell Observatory's powerful Discovery Telescope, as well as his own ...