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

As was forewarned in the entirely scientifically accurate 1996 documentary "Independence Day," this July 2 astronomers have detected an unknown object headed for Earth(ish) from beyond our solar ...

A new image has revealed the clearest glimpse yet of an interstellar visitor zipping through our solar system. The Hubble Telescope and its Wide Field Camera 3 got an incredible view of the comet ...

CAPE CANAVERAL, Fla. (AP) — The Hubble Space Telescope has captured the best picture yet of a high-speed comet visiting our solar system from another star. NASA and the European Space Agency released ...

IMAP mission will explore our solar system's protective heliosphere and will also help us develop a better understanding of ...

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

A tiny meteorite is rewriting what scientists thought they knew about the origins of our solar system. New evidence found in shavings from a meteorite known as Northwest Africa 12264 — a 50-gram (1.8 ...

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

An object from another solar system is hurtling our way. It is only the third interstellar object ever spotted in our Solar System, although many others have probably passed unnoticed. The object ...