B star

B star

noun Astronomy.
a massive, relatively hot, blue to white star, as Rigel or Spica, having a surface temperature between 10,000 and 30,000 K and with an absorption spectrum dominated by the Balmer series of hydrogen with lines of neutral helium present.
Compare spectral type.
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B star is always a great word to know.
So is Sirius. Does it mean:
a natural body that revolves around a planet such as a moon
the Dog Star, the brightest-appearing star in the heavens, located in the constellation Canis Major
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