Concept in Definition ABC
Miscellanea / / July 04, 2021
By Florencia Ucha, on Feb. 2009
A meteoroid is called a meteorite, which are the small particles that generally orbit the sun and that when they come into contact with the atmosphere of some planet, for example the earth, the friction with the air causes them to heat up and then this causes light to begin to irrigate, forming a meteor or fireball. Although the appearance and findings of these on earth is very common, the Moon and Mars have also testified to their existence.
Traditionally, the procedure used to name and differentiate all these luminous flashes that fall on the earth is to call them by the name of the region geographical location in which they were found or with the town closer.
There are three categories of meteorites, the stony ones, made up of silicate minerals, the metallic ones, mostly composed by iron and nickel and the stony with iron, which are those that contain in equal measure large amounts of rocky material and metal.
While a good number of meteorites disintegrate upon entering the earth's atmosphere without producing devastating results for the earth and the
population, approximately five hundred enter each year, at least five or six of these are discovered, recovered and studied by scientists and they are only owed, in the worst case, a small hole. Meanwhile, the responsibility of deep craters and the devastation of buildings, livestock or hectares will be due to metallic-type meteorites, which as a consequence of the endurance of the material that compose them, they can not only pass through the earth's atmosphere intact, but also cause huge holes in the earth.Those who have observed this disintegration in the atmosphere of which we speak maintain that the trail it leaves in its wake is as much or more brighter than that of the sun, it occurs at moments in which it decomposes and even adopts different shades such as red, yellow and blue.
Explosions, detonations, whistles, hisses and roars are some of the most characteristic sounds that these leave when they impact on planet earth.
Regarding the age of these, experts have confirmed that 86% of meteorites are chondrites, that is, they receive this name of the small round particles that make them up and these, in turn, date back approximately four and a half thousand five hundred million years behind. Even more and although it is a theory, many blame a meteorite as the cause of the mass extinction that occurred in the Tertiary Cretaceous period in which dinosaurs abounded.
Topics in Meteorite