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|[[File:TheSolarSystem.png|center|1000px600px]]
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*[[Uranus]]
*[[Neptune]]
====Geocentric Model====
: 1900 years ago an [[astronomer]] named [[Ptolemy]] made careful [[observation]]s of the 5 known [[planet]]s and all the [[Star]]s in the night's sky.
: [[Ptolemy]] used these [[observation]]s to claim that the [[Earth]] was at the centre of the [[Universe]] and [[The Solar System]] and that everything in the [[Universe]] [[orbit]]s the [[Earth]].
: This was known as the [[Geocentric Model]] of [[The Solar System]].
: Many people believed [[Ptolemy]] because it fit well with their religious beliefs that a god created the [[Earth]] before the [[Sun]], [[star]]s and [[planet]]s.
====Heliocentric Model====
: 400 years ago an [[astronomer]] named [[Galileo]] made [[observation]]s of the [[planet]] [[Jupiter]] using a new invention called a [[telescope]].
: [[Galileo]] noticed in the [[observation]]s that there were 4 [[moon]]s that seemed to [[orbit]] [[Jupiter]] which proved [[Ptolemy]]'s [[Geocentric Model]] of [[The Solar System]] was not true because not everything [[orbit]]ted the [[Earth]].
: [[Galileo]] then went on to claim that the [[Earth]] was not the centre of [[The Solar System]] but the [[Sun]] was the centre and the [[planet]]s [[orbit]]ted the [[Sun]].
: This was called the [[Heliocentric Model]] of [[The Solar System]].
: Unfortunately many religious people did not like this idea and [[Galileo]] was put under house arrest for heresy until he died several years later.
==Key Stage 3==
===Meaning===
[[The Solar System]] is [[The Sun]] and all the [[object]]s which [[orbit]] [[The Sun]].
{| class="wikitable"
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|[[File:TheSolarSystem.png|center|600px]]
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===About The Solar System===
: [[The Solar System]] includes all the [[planet]]s, [[Dwarf Planet|dwarf planets]], [[moon]]s, [[asteroid]]s and [[comet]]s that we can see.
: [[The Solar System]] is what we call our [[Solar System]] but there are many others.
: [[The Sun]] is at the centre of [[The Solar System]].
: [[The Solar System]] has 8 confirmed [[Planet]]s and many [[Dwarf Planet]]s.
The 8 [[Planet]]s are:
*[[Mercury]]
*[[Venus]]
*[[Earth]]
*[[Mars]]
*[[Jupiter]]
*[[Saturn]]
*[[Uranus]]
*[[Neptune]]
===Extra Information===
{{#ev:youtube|https://www.youtube.com/watch?v=KsF_hdjWJjo}}
{{#ev:youtube|https://www.youtube.com/watch?v=55TJpkSA7h8}}
==Key Stage 4==
===Meaning===
[[The Solar System]] is [[The Sun]] and all the [[object]]s which [[orbit]] [[The Sun]].
{| class="wikitable"
|-
|[[File:TheSolarSystem.png|center|600px]]
|}
===About The Solar System===
: [[The Solar System]] includes all the [[planet]]s, [[Dwarf Planet|dwarf planets]], [[moon]]s, [[asteroid]]s and [[comet]]s that we can see.
: [[The Solar System]] is what we call our [[Solar System]] but there are many others.
: [[The Sun]] is at the centre of [[The Solar System]].
: [[The Solar System]] has 8 confirmed [[Planet]]s and many [[Dwarf Planet]]s.
The 8 [[Planet]]s are:
*[[Mercury]]
*[[Venus]]
*[[Earth]]
*[[Mars]]
*[[Jupiter]]
*[[Saturn]]
*[[Uranus]]
*[[Neptune]]
===Formation of The Solar Systems===
#A large cloud of [[gas]]] and dust called a [[nebula]] collapsed due to [[gravity]] to form a [[The Sun]].
#Some of the leftover [[gas]] and dust formed a spinning disk held in [[orbit]] around the newly formed [[Sun]] by [[gravity]].
#[[The Sun]]s [[radiation]] caused the [[gas]] to spread further away from the centre of the disk leaving behind the dust.
#[[Gravity]] between the [[particle]]s of dust caused them to clump together to form [[asteroid]]s.
#Over millions of [[year]]s [[gravity]] caused the [[asteroid]]s to collide to form bigger and bigger [[asteroid]]s until they were so large that they had enough [[gravity]] to pull their [[matter]] in to a [[sphere|spherical]] shape and become [[Dwarf Planet|dwarf planets]].
#Eventually the some of the [[Dwarf Planet|dwarf planets]] swept enough [[material]] out of their [[orbit]]al paths that they became [[planet]]s.
: The [[planet]]s closest to [[The Sun]] collected very little [[gas]] and became [[Rocky Planet|rocky planets]].
: The [[planet]]s furthest from [[The Sun]] collected a large amount of [[gas]] and became [[Gas Giant|gas giant]]s.
===Extra Information===
{{#ev:youtube|https://www.youtube.com/watch?v=KsF_hdjWJjo}}
{{#ev:youtube|https://www.youtube.com/watch?v=55TJpkSA7h8}}
==Beyond the Curriculum==
{{#ev:youtube|https://www.youtube.com/watch?v=tmNXKqeUtJM}}