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ASTR 1P01 (93)
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Department
Astronomy
Course
ASTR 1P01
Professor
Bozidar Mitrovic
Semester
Fall

Description
Astronomy LecturethSeptember 27 2011Annual motions of stars constellations disappear in the west and appear in the east over timeEach star rises and sets about 4 min Earlier every dayRelative to the stars the sun moves from west to eastSolar dayInterval of time from noon to noon Or sunset to sunset Or from sunrise to sunrise The average solar day has 24 hours by definition136536524The earth must rotate by about 1 from the moment of the star rise for the observer to see the sunset How long does it take for the ear to rotate by 124h36024x60min3604mindegreeThe projection of the earths orbit on celestial sphere
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