A) Planets move along ellipses around the Sun (most of them are almost circles). (the sun is at one focus)
When moving along their orbit, planets sweep the same area during the
same time. (meaning they race when they are close to the Sun and slows down when they are away from it) C) For all the planets in our solar system, the ratio between (the orbital period)2 and (the distance from the Sun)3 is the same. or (the orb
Jun 8th, 2015
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