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By meteors/asteroids crashing into the Moon.
Those dark patches are craters from meteors that hit the moon.
Technically, yes, some probes have crashed into the moon, and have undoubtedly left tiny craters. However, none of them would be large enough to see.
Craters happen when meteorites impact on the Moon's surface. Most of the craters on the Moon are billions of years old, the impacts were much more common during the early stages of the solar system's formation. There are craters on the Earth's surface as well. They are just harder to see, because the surface of the Earth changes faster because we have an atmosphere and erosion.
Meteorites originate as asteroids from space. They are loose rocks that have been formed in the pre-planetary era or have been chipped off of a larger body such as a planet or moon by impact. When they encounter Earth's atmosphere they become meteroids, when they light up due to friction they become meteors, when they impact Earth's surface, they are meteorites.
Meteors colliding with its surface and all of the world's missions where objects successfully landed on the surface. Or crashed into it, for that matter.
Those are impact craters from when it was hit by meteors. The moon has no weather, so they never got erased like most of the impact craters that were on Earth's surface.
The spots on the Moon's surface are craters left from collisions with meteors and asteroids.
The "dents" on the surface of the moon are craters. The craters were created by asteroids and meteors that crashed into the moon's surface.
There is deposition - from the impact of meteors colliding with the moon.
By meteors/asteroids crashing into the Moon.
Unlike the Earth, the moon does not have an atmosphere to help protect it from meteors. When meteors enter the Earth's atmosphere, the resistance of the air causes friction and generates a tremendous amount of heat - so much so that most meteors are destroyed before they reach the ground. The moon does not have an atmosphere and therefore there is nothing stopping meteorites from bombarding the surface. Hence, the large number of impact craters on the moon.
it has been hit with many meteors
The theory is that these are impact craters of meteors.
These are craters, caused by impacts. Because the moon does not have sufficient gravity to sustain an atmosphere, there is no protective barrier between the moon's surface and random objects in space. Craters will typically have a raised rim, a sloped crater wall leading into the depression and a crater floor that is the base of the depression. The surrounding area of a crater will have material "splashed" onto it from the impact. Larger craters will also have a central peak caused by the kinetic energy of an impacting object melting a portion of the lunar or impacting material.
Impact craters. The size of the crater is related to the speed of the impact and the size of the object.
No, it is not grammatically correct. "Such a" can only be followed by a base-form adjective, like "large." If you want to make a comparative sentence, you might say, "Why do meteors have a MUCH larger impact on the Earth THAN on the moon."