Example image of eyePlorer eyePlorer map for 'Galaxy': Compact star Cosmic dust Dark matter Gravitation Interstellar medium Star Milky Way Center of mass Dwarf galaxy Trillion Interstellar cloud Star cluster Solar System Sun Ellipse Elliptical galaxy Spiral galaxy Peculiar galaxy Star formation Starburst galaxy Irregular galaxy Observable universe Parsec Atom Cubic metre Outer space Galaxy groups and clusters Supercluster CfA2 Great Wall Galaxy filament Universe Void (astronomy) Mass Supermassive black hole Active galactic nucleus Greek language Greek mythology Hera Heracles Zeus Geoffrey Chaucer Andromeda Galaxy William Herschel Nebula Ancient Greek philosophy Democritus Aristotle Atmosphere Sublunary sphere Olympiodorus the Younger