When an unidentified interstellar object several miles wide comes hurtling through our solar system at 37 miles a second, the ...

This week, astronomers have documented the occurrence of an unprecedented stellar death unlike anything seen before.

The interstellar object 3I/ATLAS has sparked debate among astronomers since its discovery, and some are exploring whether it ...

A newly spotted interstellar comet is passing through our solar system at a blistering speed of 130,000 miles per hour, ...

A cosmic visitor is stirring up an earthly debate. A Harvard University astrophysicist has suggested the incoming ...

NASA has classified 3I/ATLAS as a comet, but Harvard scientist Avi Loeb believes we should reach out while we still have ...

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

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.

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.