AXIS - an imaginary straight line around which an object spins, REVOLUTION - refers the object's orbital motion around another object. , ROTATION - refers to an object's spinning motion about its own axis., SEASONS - is a period of the year that is distinguished by special climate conditions., HEMISPHERE - a half of the celestial sphere.,

Tauler de classificació

Estil visual

Opcions

Canvia de fonament

Restaurar desada automàtica: ?