(astronomy) A star of spectral type O, a massive, very hot blue star with a surface temperature of at least 35,000 K (63,000°F), and a spectrum in which lines of singly ionized helium are prominent.
O star
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 | Campbell, Thomas (Quotes By) |
| Where art thou, little Star? (Gde tï, zvezdochka?), song for voice & piano (Classical Work) |
| emission nebula (astronomy) |
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