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Created page with "==Key Stage 4== right|300px|thumb|An artists impression of a [[protostar with a disk of gas an dust still circling it.]] ===Meaning=== A protostar..."
==Key Stage 4==
[[File:Protostar.png|right|300px|thumb|An artists impression of a [[protostar]] with a disk of [[gas]] an dust still circling it.]]
===Meaning===
A [[protostar]] is a [[star]] that has just formed from a [[nebula]] but is not yet hot enough for [[Nuclear Fusion|fusion]] to occur in its core.
===About Protostars===
: The collapse of the [[nebula]] to form a [[protostar]] [[Energy Transfer|transfers]] [[energy]] from the [[Gravitational Potential Energy Store|gravitational potential energy store]] of the [[gas]] and dust to the [[Thermal Energy Store|thermal energy store]] of the [[gas]] and dust, so it glows.
: The core of the [[protostar]] is not yet hot enough to undergo [[Nuclear Fusion|nuclear fusion]].
: There is a disk of [[gas]] and dust around the [[protostar]] which will eventually form the [[Planet|planetary system]].
[[File:Protostar.png|right|300px|thumb|An artists impression of a [[protostar]] with a disk of [[gas]] an dust still circling it.]]
===Meaning===
A [[protostar]] is a [[star]] that has just formed from a [[nebula]] but is not yet hot enough for [[Nuclear Fusion|fusion]] to occur in its core.
===About Protostars===
: The collapse of the [[nebula]] to form a [[protostar]] [[Energy Transfer|transfers]] [[energy]] from the [[Gravitational Potential Energy Store|gravitational potential energy store]] of the [[gas]] and dust to the [[Thermal Energy Store|thermal energy store]] of the [[gas]] and dust, so it glows.
: The core of the [[protostar]] is not yet hot enough to undergo [[Nuclear Fusion|nuclear fusion]].
: There is a disk of [[gas]] and dust around the [[protostar]] which will eventually form the [[Planet|planetary system]].