As this interstellar object approached its closest point to Earth, a massive radio telescope attempted to sniff out a ...

Incredible but true! A Harvard astrophysicist puts forward a startling hypothesis: comet 3I/ATLAS could be an alien spacecraft sent by an advanced civilization.

NASA’s search for life beyond Earth is no longer a distant dream but a coordinated campaign that now stretches from Martian ...

Breakthrough Listen searched for technosignatures from interstellar comet 3I/ATLAS but found no unusual signals or behavior ...

NASA's alien-hunting Europa Clipper spacecraft took seven hours of ultraviolet observations of interstellar comet 3I/ATLAS while both objects zoom toward Jupiter.

SCIENTISTS are scratching their heads as 3I/ATLAS reaches its closest point to Earth, but it’s not behaving like a typical comet. On December 19, 3I/ATLAS is expected to come within 170 ...

A flying piece of cosmic rock or an alien threat? Comet 3I/ATLAS is hurtling through our solar system and captivating scientists and internet users alike, even prompting Kim Kardashian to ask NASA for ...

In the many decades of NASA exploration, there has only been one detection that got on that scale. It was collected by the ...

NASA has released new images of the interstellar comet 3I/ATLAS, captured by various ground and space telescopes. Officials also dismissed conspiracy theories that the comet could be extraterrestrial ...

It came from outer space. Interstellar space, to be precise. From somewhere beyond the influence of our sun, possibly from one of our Milky Way galaxy's most ancient stars, one that formed long before ...

Interstellar Comet 3I/ATLAS makes its closest Earth pass early on Dec. 19. Here's what astronomers know about its origin and speed.