Which of the following is true of ancient constellations?
A) Out of all the ancient constellations, over 150 constellations are still in use.
B) Ancient constellations were a grouping of bright and fainter stars.
C) Ancient constellation boundaries, when they were defined at all, were only approximate.
D) All the regions of the northern and southern sky were identified as constellations by ancient astronomers.
C
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Why do Jupiter, Saturn, Uranus, and Neptune all have rings?
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