What is the significance of Polaris, the North Star?
A) It has been chosen as the zero point for declination measurements because it will always be at the pole of Earth's axis, i.e., due north.
B) The direction from Earth to Polaris is used as the zero line of prime meridian for measurements of right ascension.
C) Polaris is near the center of the curve traced out by the rotation axis as a result of the precession of the rotation direction.
D) Polaris is almost on the curve traced out by the rotation axis as a result of the precession of the rotation direction.
Correct Answer:
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Q68: What is the declination of the Sun?
A)0°
B)90°
C)a
Q69: What is the declination of Polaris?
A)0°
B)90°
C)a number
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A)band of sky extending
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Q74: Polaris is our "pole star" at the
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Q76: If the polar axis of Earth precesses
Q77: To what constellation will the north celestial
Q78: Do the astronomical coordinates of right ascension
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