Example image of eyePlorer eyePlorer map for 'Planet': Ancient Greek Clearing the neighbourhood Gravitation Nuclear fusion Orbit Planetesimal Star IAU definition of planet International Astronomical Union Solar System Deferent and epicycle Ptolemy Galileo Galilei Heliocentrism Telescope (disambiguation) Johannes Kepler Astronomer Hydrology Space Age Space probe Tectonics Tropical cyclone Volcano Extrasolar planet Milky Way Gas giant Terrestrial planet Earth Jupiter Mars Mercury (planet) Neptune Saturn Sun Uranus Venus Ceres (dwarf planet) Dwarf planet Eris (dwarf planet) Haumea (dwarf planet) Makemake (dwarf planet) Pluto Natural satellite Classical planet Babylon Chinese astronomy Universe Common sense Babylonia Mesopotamia