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Red Giant
A large, reddish star late in its life cycle.
White Dwarf
A small, hot, dim star that is the leftover center of an old star.
H-R Diagram
Hertzsprung-Russell diagram, a graph that shows the relationship between a star
s surface temperature and absolute magnitude.
Main Sequence
The location on the H-R Diagram where most stars lie.
Supernova
A gigantic explosion in which a massive star collapses and throws its outer layers into space.
Neutron Star
A star that has collapsed under gravity to the point that the electrons and protons have smashed together to form neutrons.
Pulsar
A rapidly spinning neutron star that emits rapid pulses of radio and optical energy.
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