About a hundred tons of meteoric fabric hits the soil every day.
Now before you panic,essentially all of it burns up in our atmosphere high above the planet’s surface! The huge majority of all that is made up of very tiny bits of rock, metal, and ice sloughed off of comets or asteroids,usually the size of a grain of sand or smaller. This stuff burns up from 80 – 100 kilometers up, and makes lovely shooting stars for us to ooooh and aaaaah at.
Source: blastr.com