Home
Solar System
Astronomical Unit
Astronomical unit definition: The average distance between Earth and the Sun, about 150 million km, or 93 million miles.
Related Terms
Asteroid
Asteroid Belt
Chromosphere
Coma
Comet
Ellipse
Gas Giant
Meteor
Meteorite
Meteoroid
Nuclear Fusion
Nucleus Solar System
Photosphere
Prominence
Ring
Solar Flare
Solar System
Sunspot
Terrestrial Planet
Learn While Gaming