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When viewed from Earth, the celestial sphere (the background of stars) moves east to west on a daily basis. This motion is caused by the
Q53: Increasing the exposure time of an image
Q55: Light enters a plane-parallel block of glass
Q58: The declination of a star in the
Q101: (8.0 × 10<sup>5</sup>)/(2.0 × 10<sup>3</sup>) =<br>A) 0.5
Q118: What is refraction of light?<br>A) breaking of
Q138: The average distance from Earth to the
Q172: Earth would NOT have seasons if<br>A) its
Q205: What is the difference between the synodic
Q258: From any location on Earth, the zenith
Q321: An observer measures the angle with the