galactic longitude

galactic longitude

noun Astronomy.
the angular distance in degrees measured eastward in the galactic plane from a radius drawn from the earth as center to the constellation Sagittarius.

Origin:
1910–15
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Galactic longitude is always a great word to know.
So is Polaris. Does it mean:
the polestar or North Star, a star of the second magnitude close to the north pole of the heavens, in the constellation Ursa Minor
a theory that deduces a cataclysmic birth of the universe from the observed expansion of the universe, cosmic background radiation, abundance of the elements, and the laws of physics
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