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variable star

(Encyclopedia)variable star, star that varies, either periodically or irregularly, in the intensity of the light it emits. Other physical changes are usually correlated with the fluctuations in brightness, such as ...

Scholz's star

(Encyclopedia)Scholz's star, dim binary star system, consisting of a red dwarf and brown dwarf, in the constellation Monoceros, apparent magnitude 18.3. The red dwarf is a tiny star, with less than ten percent the ...

Barnard's star

(Encyclopedia)Barnard's star, star with the largest observed proper motion (rate of motion across the sky with respect to other stars); located in the constellation Ophiuchus. The star's large proper motion, 10.28â...

sea star

(Encyclopedia)sea star, also called starfish, echinoderm of the class Asteroidae, common in tide pools. Sea stars vary in size from under 1â„2 in. (1.3 cm) to over 3 ft (90 cm) in diameter. They are commonly dull ...

Star-Spangled Banner, The

(Encyclopedia)Star-Spangled Banner, The, American national anthem, beginning, “O say can you see by the dawn's early light.†The words were written by Francis Scott Key, a young Washington attorney who during t...

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