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Concept
Main Sequence
Summary
The
main sequence
is a
continuous and distinctive band of stars
that appears on
plots of stellar color versus brightness
, known as
Hertzsprung-Russell diagrams
. Stars on the
main sequence
are in a
stable phase of nuclear fusion
, primarily
converting hydrogen into helium
in their cores, which accounts for about 90% of a
star's lifetime
.
Relevant Degrees
Astronomical Instruments and Techniques 100%
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