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==Key Stage 3==
===Meaning===
'''Newton's Universe Theory of Gravitation''' is a [[Scientific Theory|scientific theory]] developed by Sir [[Isaac Newton]] that [[explain]]s that the [[planet]]s are held in [[orbit]] around [[The Sun]] by [[gravity]].
===About Newton's Universal Theory of Gravitation===
: Before [[Isaac Newton|Newton]] [[scientist]]s had many different ideas about how [[planet]]s were held in [[orbit]] around [[The Sun]]. Some thought they were held by [[magnetism]] and others thought the [[planet]]s were held in invisible crystal [[sphere]]s around [[The Sun]].
: [[Isaac Newton|Newton]] was the first to realise that the [[force]] which pulls [[object]]s to the ground on [[Earth]] might be the same as the [[force]] that keeps [[planet]]s [[orbit]]ing [[The Sun]] and [[The Moon]] [[orbit]]ing the [[Earth]].
==Key Stage 4==
===Meaning===
'''Newton's Universe Theory of Gravitation''' is a [[Scientific Theory|scientific theory]] developed by Sir [[Isaac Newton]] that [[explain]]s that the [[planet]]s are held in [[orbit]] around [[The Sun]] by [[gravity]].