The interstellar object hurtling toward the inner solar system, where Earth is located, is much larger than previously thought, astronomers say.

Object 3I/ATLAS is now too far from Earth to aim a telescope at, but prior observations showed some unusual behavior. The anomalous nature of the object led astrophysicist Avi Loeb to apply a thought ...

Recently, astronomers have detected an unusual spacecraft-sized object near Jupiter, sparking curiosity and debate within the scientific community. With its unexpected trajectory and size, the object ...

Most of that brightness increase has been in the green part of the visible light spectrum, suggesting a “surge of gas production as the comet nears the Sun,” according to SpaceWeather. “The key ...

A Harvard physicist who sounded the alarm earlier this month about a rare interstellar object passing through our solar system — suggesting it might be more than a comet — now says it could even be a ...

Astronomers recently discovered a rare interstellar object passing through our solar system, and a Harvard physicist is sounding the alarm that its strange characteristics might indicate it’s more ...

Interstellar object 3I/ATLAS — which is zooming through our inner solar system — appears to be emitting its own light, according to Harvard astrophysicist Avi Loeb. The observation by Loeb, if ...

Earlier this year, astronomers spotted a mysterious interstellar visitor, widely believed to be a comet, screaming into our solar system. With the help of NASA’s James Webb Space Telescope, ...