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SlideshowReport

Positions in the Sky

Description
Stars appear to be fixed on a spherical shell (the celestial sphere) that surrounds Earth

Configuration of stars named in honor of mythological characters or great heroes
Today 88 constellations are recognized
Constellations divide the sky into units, like state boundaries in the United States
The brightest stars in a constellation are identified in order of their brightness by the letters of the Greek alphabet – alpha, beta, and so on
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