Called 3I/ATLAS, the comet is only the third of its kind known to astronomers, and it’s likely been heading our way for billions of years, carrying pristine material from another star system ...

Our solar system's latest and only third known interstellar visitor is becoming more fascinating by the minute. Spotted in early July, the object, dubbed 3I/ATLAS, is believed to be a comet. It's ...

A peculiar object that has defied NASA's expectations has been identified in space, which has been labelled as an ...

An "interstellar object" discovered only last month is hurtling through the Solar System at an unprecedented 210,000 ...

Interstellar comet 3I/ATLAS shines in the sharpest view yet captured by the Hubble Space Telescope, helping astronomers ...

NASA is tracking a mysterious, fast-moving object entering our solar system, raising questions about whether it's just a ...

The Manhattan-sized interstellar object rocketing through Earth’s inner solar system is covered by a cloud of carbon dioxide, ...

Last month, astronomers made an exciting discovery, observing an interstellar object — only the third of its kind ever ...

Interstellar object 3I/ATLAS shows an unexpected frontal glow that Harvard's Avi Loeb says cannot be explained by sunlight ...

A Harvard astronomer is suggesting that an interstellar object nearing Earth could be an engineered object — rather than a ...

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.

Astronomers on Wednesday confirmed the discovery of an interstellar object racing through our Solar System -- only the third ever spotted, though scientists suspect many more may slip past unnoticed.