The Life Cycle of a Star [Physics only]

2 min read · part of the full Exam Guide

Every star starts the same way

Nebula (cloud of dust and gas) $\rightarrow$ protostar (gravity pulls the cloud together, it heats up) $\rightarrow$ main sequence star (fusion of hydrogen into helium; gravity and fusion energy in balance)
What happens next depends on the size (mass) of the star

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In the full topic

Every star starts the same way
A star about the size of the Sun
A star much more massive than the Sun
Where the elements come from

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