Multiple Choice
A very bright UFO is seen near the moon's orbit. An astronomer takes a spectrum of it and discovers it has a bright line spectrum on a dark background. The earth's population is near panic when the astronomer announces the UFO is
A) a metal spacecraft.
B) a giant rock about to hit Earth.
C) a glowing cloud of gas.
D) a star like the sun.
Correct Answer:
Verified
Correct Answer:
Verified
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