A meteorite is an object formed and originating in space that outlives crashing on the surface of the Earth. Meteorites are almost always different sizes and shapes, varying from small to large. There are numerous meteorites extracted from tiny astronomic objects called meteoroids, but almost all of the time they result from hits of other asteroids. When a meteoroid enters the earth's atmosphere or travels into the earth's gravitational orbit, ram pressure causes that object to overheat thanks to the attractive force of the earth's gravitational pull. At that point, meteorites begin giving off light as it forms a " fireball" because of the fire on its outer surface. This type of meteor is known as moving star.
Meteorites that are noted and recovered as they impacted the Earth are called falls. All other meteorites are known as finds. As specified in the report of February 2010, there are approximately 1,086 witnessed falls, existing in the world's collections. In contrast, there may be more than 38,660 documented meteorite finds.
Meteorites are commonly divided into three main categories: (1) stony meteorites made up of rocky and stony materials; (2) iron meteorites composed of metallic iron and sometimes a little quantity of nickel and also; (3) stony-iron meteorites are comprised of both metallic and rocky material. Modern classification schemes divide meteorites into groups according to their structure, traits, chemical properties, isotopic composition and mineralogy. Most of the meteorites are in stony meteorites category and about 6% of the falling meteorites are in the iron and stony-iron category.
The majority of the meteoroids split into small bits when enter into the earth's atmosphere. It is ascertained that about five hundred meteoroids strike the earth's surface each year - having different sizes that range all the way from the scale of marbles to footballs or even larger - with few of these being documented as recovered. There are some meteorites that are so giant and of such size, that striking the outer surface of the earth, with their terminal speed, form pits on the surface of earth and can sometimes damage public property which could end up in injury or loss of life.
Dr. H.H. (Harvey Harlow) Nininger began a tactic for the search of meteorites in the great plains of the USA in the late 1920's to 1950's. He travelled in the chosen area and educated the local popularion about the attributes of the meteorites, identification and what to do if one found it. His method was extremely successful and this enabled him to discover more than 200 new meteorites. The majority of newly found meteorites have been of the rocky type. In the late 1960's, Roosevelt County , New Mexico in the Great Plains region was selected for finding new meteorites. One hundred forty (140) meteorites have been uncovered in the area since 1967. Intriguingly, a few meteorites were discovered in Antarctica between 1912 and 1964. This discovery has impassioned the hunt to retrieve more meteorites in Antarctica. In 1969, the 10th Japanese Antarctic Research Expedition found some meteorites in Antarctica. Another Japanese Antarctica expedition began in 1974 for the search of more meteorites with outstanding success. This team succeeded to recover just about seven hundred (700) meteorites while there. 1 or 2 dozen meteorites have also been found in the Nullarbor location of Western and Southern Australia before 1971.
Meteorites that are noted and recovered as they impacted the Earth are called falls. All other meteorites are known as finds. As specified in the report of February 2010, there are approximately 1,086 witnessed falls, existing in the world's collections. In contrast, there may be more than 38,660 documented meteorite finds.
Meteorites are commonly divided into three main categories: (1) stony meteorites made up of rocky and stony materials; (2) iron meteorites composed of metallic iron and sometimes a little quantity of nickel and also; (3) stony-iron meteorites are comprised of both metallic and rocky material. Modern classification schemes divide meteorites into groups according to their structure, traits, chemical properties, isotopic composition and mineralogy. Most of the meteorites are in stony meteorites category and about 6% of the falling meteorites are in the iron and stony-iron category.
The majority of the meteoroids split into small bits when enter into the earth's atmosphere. It is ascertained that about five hundred meteoroids strike the earth's surface each year - having different sizes that range all the way from the scale of marbles to footballs or even larger - with few of these being documented as recovered. There are some meteorites that are so giant and of such size, that striking the outer surface of the earth, with their terminal speed, form pits on the surface of earth and can sometimes damage public property which could end up in injury or loss of life.
Dr. H.H. (Harvey Harlow) Nininger began a tactic for the search of meteorites in the great plains of the USA in the late 1920's to 1950's. He travelled in the chosen area and educated the local popularion about the attributes of the meteorites, identification and what to do if one found it. His method was extremely successful and this enabled him to discover more than 200 new meteorites. The majority of newly found meteorites have been of the rocky type. In the late 1960's, Roosevelt County , New Mexico in the Great Plains region was selected for finding new meteorites. One hundred forty (140) meteorites have been uncovered in the area since 1967. Intriguingly, a few meteorites were discovered in Antarctica between 1912 and 1964. This discovery has impassioned the hunt to retrieve more meteorites in Antarctica. In 1969, the 10th Japanese Antarctic Research Expedition found some meteorites in Antarctica. Another Japanese Antarctica expedition began in 1974 for the search of more meteorites with outstanding success. This team succeeded to recover just about seven hundred (700) meteorites while there. 1 or 2 dozen meteorites have also been found in the Nullarbor location of Western and Southern Australia before 1971.
About the Author:
Tom one of the original contributors to the base data,
as well as, to the progress and advancement
of Satellite Treasure
Map Info overlaid on Google
Maps. Tom has accumulated this
info through many years of seeking out obscure truths thru many wide-ranging
sources.
as well as, to the progress and advancement
of Satellite Treasure
Map Info overlaid on Google
Maps. Tom has accumulated this
info through many years of seeking out obscure truths thru many wide-ranging
sources.
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