A planet (from Greek πλανήτης αστήρ "wandering star") is a celestial body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighbouring region of planetesimals.
Planets
Planets
Planets
Planets
Planets
Planets
Planets
Planets
No comments:
Post a Comment