Meteoroids burn up in the atmosphere and fall to the Earth as dust. Every day, approximately 3000 metric tons of dusty space material falls to Earth. The Willamette meteorite If the meteor does not burn up completely, the remaining portion hits the Earth and is then called a meteorite. Over 100 meteorites hit the Earth each year.

How frequently do meteorite falls occur?

Our best estimates of the total incoming meteoroid flux indicate that about 10 to 50 meteorite dropping events occur over the earth each day. It should be remembered, however, that 2/3 of these events will occur over ocean, while another 1/4 or so will occur over very uninhabited land areas, leaving only about 2 to 12 events each day with the potential for discovery by people. Half of these again occur on the night side of the earth, with even less chance of being noticed. Due to the combination of all of these factors, only a handful of witnessed meteorite falls occur Each year.

As an order of magnitude estimation, each square kilometer of the earth’s surface should collect 1 meteorite fall about once every 50,000 years, on the average. If this area is increased to 1 square mile, this time period becomes about 20,000 years between falls.