NASA has discovered a mysterious interstellar comet entering our solar system. Learn what this strange visitor is and how scientists are tracking it now.

CAPE CANAVERAL, Fla. (AP) — Astronomers say they've spotted an object in our solar system that's believed to be from another ...

Astronomers this week confirmed the discovery of an interstellar object racing through our Solar System – only the third ever ...

Based on the comet's brightness and current distance — it's located just inside Jupiter's orbit — scientists estimate its ...

Interstellar comet 3I/ATLAS confirmed as the third from beyond our solar Livestream of 3I/ATLAS hosted by Virtual Telescope ...

NASA said the comet will make its closest approach to the sun in late October, scooting between the orbits of Mars and Earth ...

Newfound interstellar object 3I/ATLAS may be carrying pristine material from early in the Milky Way’s star-forming history.

The first interstellar object spotted in our Solar System was the cigar-shaped ‘Oumuamua, discovered in 2017 by the ...