A) a rapidly moving star
B) a piece of mater which has entered the earth's atmosphere from outer space
C) part of a constellation
D) a comet without a tail
Correct Answer: B
Solution :
Meteor is a small celestial body which has entered the earth's atmosphere by the gravitational force of earth, when they pass close to it. Meteors typically occurs in the mesosphere, and most range in altitude from 75 km to 100 km.
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