Albedo Sidereal Period Perihelion Aphelion
Mars Neptune Mercury Earth
Black Hole Light Year Universe Angstrom
125 million years 25 million years 225 million years 5 million years
Richter Scale Mohs Scale Antoniadi Scale Mercalli scale
Cosmology Astrology Astrophysics Astronomy
Asteroids Constellations Meterorites Comets