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S star

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noun Astronomy.
a relatively cool red giant having a surface temperature of about 2500 K and an absorption spectrum with strong lines of zirconium oxide.
QUIZ
SHALL WE PLAY A "SHALL" VS. "SHOULD" CHALLENGE?
Should you take this quiz on “shall” versus “should”? It should prove to be a quick challenge!
Question 1 of 6
Which form is used to state an obligation or duty someone has?
Compare spectral type.

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