CAPE CANAVERAL, Fla. — Astronomers have discovered a rare in-sync solar system with six planets moving like a grand cosmic orchestra, untouched by outside forces since their birth billions of years ...

Astronomers have discovered a rare in-sync solar system with six planets moving like a grand cosmic orchestra, untouched by outside forces since their birth billions of years ago. The find, announced ...

Space weather forecasters are watching for faint CMEs that could reach Earth later this week. After more than three weeks without a powerful solar flare, the sun has suddenly ramped up its activity, ...

This cosmic visitor is now officially named 3I/ATLAS, and it appears to be a comet from another solar system. reading time 3 minutes Update: July 3, 09:24 a.m. ET: On Wednesday, July 2, the ...

An interstellar object called 3I/ATLAS is passing through our solar system this year, NASA announced yesterday. Today at 6 p.m. ET, you can see it for yourself, thanks to a livestream from the Virtual ...

A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and Earth. The authors dubbed it Planet Y.