This cloud is a window into the dark Universe,” study co-author and Space Telescope Science Institute (STCScl) team member ...

NBC News' Gadi Schwartz reports on "3I/ATLAS," mysterious outer space object that is thought to be billions of years old, making its closest approach to Earth, giving scientists an opportunity to ...

More information about a mysterious, energetic burst, formally known as a gamma-ray burst (GRB), spotted in space 13 billion ...

The gravitational lens JVAS B1938+666 consists of massive bodies ranging from 6.5 billion to 11 billion light-years away, ...

NASA's SPHEREx and Hubble find mysterious 3I/ATLAS behaving strangely after perihelion. The interstellar visitor's 'mini-jets ...

A mysterious object spotted floating through our solar system last year might be an alien spacecraft that was investigating Earth, according to Harvard astronomers. The astronomers suggested the ...

A strange, starless cloud on the edge of a nearby galaxy is forcing astronomers to confront one of the biggest unknowns in ...

One of the James Webb Space Telescope’s (JWST) earliest mysteries was that of the little red dots, which researchers have ...

Scientists recently discovered a mysterious object in outer space that, for a time, was sending out regular bursts of energy in a way that researchers hadn't previously observed. According to an ...

Space agencies around the globe have launched an unprecedented wave of planetary defense exercises, all centered on a mysterious interstellar visitor that refuses to behave like anything scientists ...

ATLAS, the interstellar anomaly that has rivetted scientists as it hurtles through our solar system, might not be as special as we thought, says a space expert ...