This documentary explores the bizarre characteristics of Triton, Neptune’s strange moon that defies the rules of the solar ...

This documentary explores the story of exoplanets, showing how humans discovered worlds beyond our solar system and how these findings reshape our place in the universe.

Objects such as 'Oumuamua, Borisov and recently 3I/ATLAS have opened our eyes to the reality that outsiders regularly visit our solar system — and we're about to start spotting a whole lot more of ...

Astronomers have uncovered a massive new trans-Neptunian object, 2017 OF201, lurking at the edge of our solar system. With an orbit stretching 25,000 years and a size that may qualify it as a dwarf ...

After decades of exploring, NASA's Voyager 1 hit the edge of the solar system and passed through a great "wall of fire," ...

Astronomers have been racing to get a better look at 3I/ATLAS, a mysterious object screaming into our solar system from far beyond. Now, as the BBC reports, new observations by the Gemini South ...

Comet 3I/ATLAS is just the third observed interstellar object ever witnessed in Earth's solar system. The Gemini South telescope in Chile is the latest observatory to get a glimpse of the object as it ...

Our solar system is a smashing success. A new study suggests that from its earliest period—even before the last of its ...

A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...