Learn about the theories behind the unusual dimming of Tabby's Star, from alien megastructures to an orbiting companion ...

A cigar-shaped rock zooming through our Solar System — the first object from a foreign star system ever spotted in our midst — is cloaked in a coat of organic material, astronomers said Monday. Dubbed ...

Astronomers using the James Webb Space Telescope have identified a strange ultra-bright object from the early universe.

Add Yahoo as a preferred source to see more of our stories on Google. An illustration of an exoplanet in an alien star system. New research suggests that radio emissions from intelligent aliens may be ...

The body is the size of the entire solar system and glows with a brilliant red light billions of light years from Earth ...

A giant cloud of vaporized metal may be hiding a secret planet or second alien sun in a nearby star system, a new study reveals. The mysterious cloud is up to 15,000 times wider than our planet, and ...

Scholz’s star is a red dwarf and alongside it there was a brown dwarf; both of which are failed stars that couldn’t muster enough mass to get any fusion going in its mass. However, as recently as ...

Astronomers found no radio signals from the comet that would suggest it is an extraterrestrial spacecraft. 3I/ATLAS was confirmed as the third known object to enter our solar system from interstellar ...

A strange interstellar comet discovered last year and speculated by a prominent astronomer to be an alien spacecraft could be older than our Solar System, according to a new study. The comet, first ...

Using NASA's Transiting Exoplanet Survey Satellite (TESS), astronomers have discovered a triply-eclipsing star system. The newfound system, designated TIC 295741342, consists of two sun-like stars in ...

The interstellar comet 3I/ATLAS was the third object ever discovered in our solar system that originated from another star system. Despite a viral conspiracy theory, NASA officials have repeatedly ...

The interstellar comet 3I/ATLAS was the third object ever discovered in our solar system that originated from another star system. Despite a viral conspiracy theory, NASA officials have repeatedly ...