Annual meteor showers such as the Perseids in August are caused by _________.
A) the breakup of asteroids that hit our atmosphere at predictable times
B) Earth passing through the debris left behind by a comet as we cross its orbit
C) nuclear reactions in the upper atmosphere triggered by meteoritic particle storms
D) passing asteroids triggering auroral displays
Correct Answer:
Verified
Q56: Comet nuclei typically have an average density
Q57: Astronomers think that most comets come from
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A) a prize
Q59: What is the Oort cloud?
A) gas around
Q60: What are comets made of?
A) mostly iron,
Q62: What evidence supports the assumption that a
Q63: What evidence do we have that an
Q64: Why can a rather small meteorite make
Q65: Why do astronomers suspect 'Oumuamua is not
Q66: Why do astronomers suspect there may be
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