A cosmic coincidence could give us an unprecedented look at a visitor from another solar system. If all goes well.

NASA confirms the interstellar object 3I/ATLAS poses no threat to Earth, despite viral speculation. Scientists and the UN are ...

Spanish researchers have traced the path of comet 3I/ATLAS, an interstellar traveler that may hold clues to the origins of ...

When you get the chance to go on vacation, take it by October 29, because you never know what may come. That was Harvard ...

Anyone who studies planetary formation would relish the opportunity to get a close-up look at an interstellar object. Sending ...

At the end of October Europa Clipper will fly in line with 3I/ATLAS’ ion tail — but will any of the charged particles reach ...

I ATLAS interstellar comet tail mystery has drawn scientific attention as the Hera and Europa Clipper spacecraft prepare to ...

A proposed interstellar mission envisions sending a gram-scale nanocraft, propelled by a laser-driven lightsail to a nearby black hole, achieving approximately one-third the speed of light. Upon ...

An alien comet passing through our solar system made its closest approach to Mars recently, and two European robotic ...

An interstellar visitor is zipping through the Milky Way, and a team of Michigan State University researchers is keeping ...

In 2016 billionaire Yuri Milner hosted a press conference at One World Observatory, the atrium topping the slick skyscraper at the center of the rebuilt World Trade Center complex. Milner had grown ...