There is a huge asteroid somewhere on the earth Solar system, It goes to Earth.
The evidence of this mysterious space rock comes from a diamond-studded meteor that exploded over Sudan in 2008.
NASA found 9 tons (8,200 kg), 13 feet (4 meters) of objects meteor Heading towards the earth before the impact, researchers appeared in the Sudanese desert and collected an unusually rich amount of debris. Now, a new study of one of these meteorites suggests that the meteor may have split into a huge asteroid-about the size of the dwarf planet Ceres, the largest object in the asteroid belt.
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Just like about 4.6% of the meteorites on Earth, this meteorite called Almahata Sitta (AhS) is made of a material called carbonaceous chondrite. These black rocks contain organic compounds as well as various minerals and water.
The mineral composition of these space rocks provides clues about the “mother asteroid”
Vicky Hamilton, a planetary geologist at the Southwest Research Institute in Boulder, Colorado, said in a statement: “Some of these meteorites are mainly mineral and provide evidence of exposure to water at low temperatures and low pressures. “The composition of other meteorites suggests that they heat up in the absence of water.”
The research team analyzed a 0.0018 ounce (50 mg) sample of AhS under a microscope and found that it had a unique mineral composition.
Meteorites contain an unusual set of minerals that are formed at “moderate” temperatures and pressures (higher than what you would find in a typical asteroid, but lower than the interior of the planet). Especially a mineral, amphibole also needs to be exposed to water for a long time to develop.
Amphibole is common enough on the earth, but it has only appeared once in trace meteorites. The meteorite is called Allende, which is the largest carbonaceous chondrite ever discovered. It fell in Chihuahua, Mexico in 1969.
AhS has a high amphibole content, indicating that the fragment ruptured a parent asteroid that had never had a meteorite.
The researchers wrote in the study that samples brought back from asteroids Ryugu and Bennu by Japan’s Hayabusa2 and NASA’s OSIRIS-REx probes, respectively, may find more space rock minerals that rarely appear in meteorites.
Hamilton said that perhaps certain types of carbonaceous chondrites are not immune to a crash in the atmosphere, which prevents scientists from studying the taste of chondrites that may be more common in space.
She said: “We think that the carbonaceous chondrite material in the solar system is more than what our meteorite collection represents.”
The paper was published in the journal on December 21 Natural astronomy.
Originally published in “Life Science”.