Emission nebulae like M42 occur only near stars that emit large amounts of:
A) visible light.
B) microwaves.
C) ultraviolet radiation.
D) infrared heat.
E) X-rays and gamma rays.
Correct Answer:
Verified
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Q28: Most interstellar clouds are:
A)much bigger than our
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A)interstellar gas
B)interstellar dust
C)the
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