HomeAstronomyColossal asteroid impact forever changed the balance of the moon

Colossal asteroid impact forever changed the balance of the moon

The moon’s far side is littered with many more craters than the nearside, which is visible from Earth. (Image credit: Shutterstock)

One side of the moon is littered with far more craters than the other, and researchers finally know why: A massive asteroid that slammed into the moon around 4.3 billion years ago wreaked havoc in the moon’s mantle, according to a new study. 

More than 9,000 visible craters pockmark the moon,  thanks to barrage of impacts from meteors, asteroids and comets over billions of years, according to the International Astronomical Union. However, these craters are not evenly distributed across the lunar surface. The far side of the moon, which people never see from Earth because the moon is tidally locked (meaning that it takes the same amount of time for the moon to rotate and orbit Earth), has a considerably higher concentration of craters than the visible nearside.

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