Day/night - when the earth rotates around its axis, seasons - occur as the earth orbits around the sun, day - when that part of the earth faces the sun, night - when that part of the earth faces away from the earth, Tides - caused by the gravitational pull of the moon and sun, orbit - the path of a satellite, planet or other body as it moves around a larger body,

Space

طباعة
تضمين

لوحة الصدارة

النمط البصري

الخيارات

تبديل القالب

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