Sedna is drifting into a part of its path where human technology can finally contemplate catching up, and that window will ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. An illustration of confirmed dwarf planets and their moons. From left to right: Pluto (with ...

Journey to the farthest reaches of our solar system and uncover the mysteries of Sedna, a reddish dwarf planet that orbits the Sun once every 11,400 years. Explore its strange orbit, icy surface, and ...