Eris, Ceres, and Pluto are dwarf planets. Earth, Mars, Jupiter, Neptune, Pluto, Saturn, and Uranus each have at least one moon. Move each planet and dwarf planet into the correct part of the Venn diagram.
Watch planets and other objects in the solar system move in real-time. You can also rewind back up to 1950 and forward to 2050 to see how they will move in the future. (Watch the introductory video if you need help.)