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| the Twins, a zodiacal constellation between Taurus and Cancer containing the bright stars Castor and Pollux |
| a star in an intermediate stage of evolution, characterized by a large volume, low surface temperature, and reddish hue |
scintillation scin·til·la·tion (sĭn'tl-ā'shən)
n.
A spark; a flash.
A flash of light produced in a phosphor by absorption of an ionizing particle or photon.