A cosmic visitor is stirring up an earthly debate. A Harvard University astrophysicist has suggested the incoming interstellar object 3I/ATLAS could be an alien probe. But NASA and most astronomers ...

U-M astronomers are helping study a fast-moving, ancient, and massive comet that formed beyond our galaxy. A group of ...

NASA has confirmed the detection of 3I/ATLAS, the fastest interstellar object ever observed, speeding through our solar system at an astonishing 130,000 miles per hour.

Details about a mysterious interstellar object detected in the solar system on July 1 are now out, as shared by NASA ...

NPR's Ari Shapiro talks with astronomer David Jewitt about what we can learn from the third interstellar object to have entered our solar system, a comet-like object known as 3I/ATLAS.

“They happen to be very close to each other in the sky right now,” he says. “The closest approach was actually this (Tuesday) ...

On the subject of Comet 3I's unnaturalness, Harvard physicist Avi Loeb has admitted to having concerns about the discovery in ...

The space telescope obtained some details about the third recent interstellar visitor.

Physicist Avi Loeb has argued the possibility that 3I/ATLAS spotted by a NASA telescope could contain alien intelligence ...

The 3I/ATLAS, which was first spotted on July 1, has the fastest velocity of any solar system visitor to date, NASA says. The comet’s 130,000 mph speed is nearly 100 times the speed of some bullets.

On August 11, 2025, Harvard astrophysicist Avi Loeb sparked global intrigue by proposing that the interstellar object 3I/ATLAS, discovered on July 1, 2025, by NASA’s ATLAS telescope in Chile, may be ...

Comet 3I/ATLAS has been observed by the Hubble Space Telescope, which delivered new insights into this third interstellar ...