Assertion: solar system's star | /r/CapableOf | start off as diffuse red supergiants
Facets:
value: to become
type: PURPOSE
Source sentences:
text: Theories at the time suggested that stars evolved moving down the main-sequence of the Hertzsprung-Russell diagram, starting off as diffuse red supergiants before contracting and heating to become blue main-sequence stars, then even further down to red dwarfs before finally ending up as cool, dense black dwarfs.