A rare discovery beyond Neptune is forcing scientists to rethink early solar system dynamics and the forces that shaped ...

In the outer reaches of our solar system, far beyond the orbit of Pluto, lies Sedna, one of the most mysterious objects ever discovered. This reddish dwarf planet follows such an extreme orbit that it ...

A team of researchers has outlined how a new "direct fusion drive" propulsion system could allow us to reach Sedna this century. Given the dwarf planet's wide orbit, it could be our best chance for ...

While for most people Pluto is the most distant planet in the Solar System, things get a lot more fuzzy once you pass Neptune and enter the realm of trans-Neptunian objects (TNOs). Pluto is probably ...

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 ...