Answer:
The crater doesn't "hit" the moon; the crater is the result of the explosion. A meteorite might hit the moon. Since it hits with a huge energy, it may indeed be considered an explosion.
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For the last few years, astronomers have been watching the Moon during meteor showers on Earth. (After all, the Moon is pretty close to the Earth, right?) They have observed hundreds of explosions - meteoric impacts - on the Moon. Since the Moon has no atmosphere, any meteorite will strike the surface of the Moon at full speed, and some of these meteors are moving upwards of 150,000 miles per hour.