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From Dust to Meteorite
Meteors and meteorites Meteors and meteorites are two nouns which in fact define the same interplanetary object, with the difference that the second reaches the ground, as we explained in the page dedicated to meteoroid classes. Both are meteoroids originating from the decay of comets or fragments of asteroids and were formed billions of years ago. Most meteorites are microscopic and vaporize in dense layers of the atmosphere. The fragments which have withstood atmospheric friction are usually “heavy weights”, remnants of rocks originally measuring a few centimeters to several tens of meters in diameter and weighing up to several hundred tons. Of course, such meteorite falls are extremely rare, and it is fortunate for the human species. How many meteorites fall on Earth? With each passing day, millions of microparticles of a tenth of a millimeter cover the earth’s surface. The quantity of meteoroids hitting the upper atmosphere each day varies between 0.4 and 110 tonnes per day with an estimated maximum of 300 tonnes per day (cf. CS Gradner et al., 2014), which brings the average to 33 tonnes depending on the NASA. Most of this dust burns in the atmosphere and does not reach the ground
By mahdiansyah2 years ago in Futurism