Gravity, Inertia, Orbit, The force of atraction between the star and planet that pulls the planet towards the star, The tendency of the planet to move in a straight line that keeps the planet moving, The path of the planet due to the balance between gravity and inertia.

لوحة الصدارة

النمط البصري

الخيارات

تبديل القالب

استعادة الحفظ التلقائي: ؟