A stellar core remnant of electron-degenerate matter, Earth-sized but with a mass comparable to the Sun. The final state of stars not massive enough for neutron stars or black holes. They slowly cool and fade over billions of years.
A band on the Hertzsprung-Russell diagram representing stars fusing hydrogen into helium. Stars spend the majority of th...
A luminous giant star that has exhausted its core hydrogen. The outer layers expand and cool, giving a reddish appearanc...
A powerful explosion at the end of a massive star's life, briefly outshining an entire galaxy. Supernovae scatter heavy ...
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