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→Orbits
: [[Gravity]] is a constant [[force]] directed to the centre of a [[massive]] [[object]].
: [[The Moon]] feels a [[force]] pulling it towards the centre of the [[Earth]]. The [[Earth]] feels a [[force]] equal in [[magnitude]] but opposite in direction to that of [[The Moon]].
{| class="wikitable"
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|[[File:Orbit1.gif|center|400px]]
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| style="height:20px; width:400px; text-align:center;" |The [[planet]]s are pulled towards the [[sun]] by [[gravity]].