The simulation of the Solar System that came the closest to the observation was the presence of a small planet, between the ...

A new study has proposed the existence of Planet Y, an alternative Planet Nine candidate that is smaller and closer to Earth ...

It started, as many cosmic enigmas do, with a dim dot of light on a Hubble Space Telescope photo the sort that professional ...

It will be a while before you can see it for yourself, however. Halley’s comet was last visible from Earth in 1986, meaning ...

Stretching billions of miles beyond Neptune, the Kuiper Belt is a vast ring of icy worlds — a frozen frontier where ancient ...

A new study from BYU professor of physics and astronomy Darin Ragozzine and former undergraduate student Maia Nelsen provides new insight into the structure of objects in the Kuiper Belt. Using data ...

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.

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

You are probably pretty familiar with the name Subaru because of the cars it makes. But as with any Japanese word, there's more to it than meets the eye: it’s used to depict more than just the ...

The farthest object ever explored is slowly revealing its secrets, as scientists piece together the puzzles of Ultima Thule — the Kuiper Belt object NASA’s New Horizons spacecraft flew past on New ...

Can asteroids orbit each other in pairs of three, also called a three-body or triple system, like stars? This is what a recent study published in The Planetary Science Journal hopes to address as a ...

IMAGES: Hubble images and illustrative graphics are available at http://hubblesite.org/news/2006/05/ & http://www.berkeley.edu/news/media/download/ Berkeley ­ A ...