Multiple Choice
Recent calculations show that the Tunguska explosion in Siberia in 1908, which had an explosive power of several hundred kilotons of TNT, was probably caused by:
A) a small comet nucleus about 150 m across suddenly vaporizing in the atmosphere.
B) the impact and annihilation of a very small amount of antimatter from somewhere else in the universe.
C) a small natural nuclear explosion in uranium deposits.
D) a small stony asteroid about 80 m across disintegrating explosively in the atmosphere before hitting the ground.
Correct Answer:

Verified
Correct Answer:
Verified
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