There was no iron in the sky at the beginning of the universe. Iron is a star whose mass is seven times greater than that of the sun, and it is produced during its own evolution. In the middle stage of star evolution, due to the strengthening of hydrogen-helium fusion, the temperature and pressure gradually increased, and nuclear fusion gradually produced all elements from lithium element 3 to iron element 26. After the star nuclear fusion produces enough iron, it is the beginning of the exhaustion of nuclear fusion energy (because the conditions inside the star can't make iron fuse), so the star collapses, the star becomes a supernova and explodes. So far, the result of Starlife's coming this far!
The identification of meteorites is not based on a certain feature, especially the visual inspection of meteorites needs comprehensive judgment. Don't judge blindly by black and magnetism, that's just one of the reference conditions! Judging whether a meteorite is based on certain basic knowledge, learning, mastering knowledge and practical experience can make you harmless!
I look forward to your comments and opinions!
Meteorite refers to other celestial fragments in the solar system other than the earth. It can be roughly divided into three categories: stone meteorites dominated by silicates, iron meteorites dominated by iron-nickel alloys, and stone-iron meteorites dominated by mixtures of iron and silicates. And glass meteorites. Jilin 1 is the largest stone meteorite in the world at present. The average density of meteorites is between 3 and 3.5.
Scientists say that between the orbits of Mars and Jupiter, it is the hometown of meteorites. Most meteorites come from the asteroid belt between Mars and Jupiter, and a few come from the moon and Mars. Because meteorites are aliens from outer space, some meteorites contain ammonia, nucleic acids, fatty acids, pigments and 1 1 amino acids. Therefore, meteorites contain important information such as the formation of the solar system, the birth of the earth, the origin of life, geochemistry and so on.
Meteorites containing elemental iron contain the evolution history of the universe and stars. According to the Big Bang theory, quarks, leptons, gluons and other particles were produced in the early stage of the formation of the universe. Quarks form hadrons such as protons and neutrons, and later photons, neutrinos and electrons. Neutrons and protons combine to form deuterium, which quickly generates helium nuclei, and at the same time generates tritium nuclei, helium 3 and other light nuclei. After nuclear synthesis, electrons, protons and helium nuclei in the universe combine to form ionized gas, and electrons and protons synthesize hydrogen nuclei. Finally, protons, electrons, atoms and photons are separated and gradually form stars and galaxies.
After the formation of stars and galaxies, stars keep shrinking and heating up. Hydrogen turns into helium through thermonuclear reaction, and radiates energy in the form of electromagnetic waves. When most of the hydrogen in the core of a star is fused into helium, the nuclear reaction is weakened and the radiation force is reduced. The star core contracts under the action of gravity, and the heat generated by gravitational potential energy raises the temperature. Therefore, if helium nuclei polymerize into carbon nuclei, oxygen, silicon and iron are more important.
After iron is formed, if the star explodes, particles will "float" in space. When the force of particles is unbalanced, they will fall into other planets and onto the earth. People call them "meteorites". Because there is no oxidant in space, iron naturally exists in meteorites as a simple substance.
Meteorites are fragments of other celestial bodies in the solar system other than the earth. More than 40,000 meteorite samples have been collected all over the world, which can be roughly divided into three categories: stone meteorites (mainly composed of silicates), iron meteorites (iron-nickel alloy) and stone meteorites (mixture of iron and silicates). On the other hand, the main components of rocks on the earth are silicates and some carbonates and metals, similar to meteorites. Only meteorites contain more rare metals and isotopes of some elements. Generally, there are few radioactive elements in meteorites, so they are harmful to human body. This answer was adopted by netizens.
Non-magnetic black meteorite, parents can enjoy.
The true value of meteorites
20 17.4. 1
Meteorite-three kinds of intelligent and civilized aliens implant all kinds of advanced life software into it by quantum technology according to God's will, and then airdrop it to the earth, and then the important advanced life software will be taken out and used by knowledgeable people who have obtained or discovered meteorites. This is called the principle of fair competition.
Unfortunately, human astronomical scientists know nothing about this knowledge, but fortunately, I know!
So every time I take away all kinds of software from the meteorite. Years of practice have fully proved that these advanced life softwares are great! Really advanced! Anyway, others look ignorant, right?
For example, "Yintuo", the largest iron meteorite in China and the third largest iron meteorite in the world, was discovered in Qinghe, Altai region, Xinjiang on 1898 and transported to Urumqi on 1965. This cosmic "star" is currently stored in the Xinjiang Museum of Geology and Mineral Resources. However, an important set of life software was originally stored in the "Silver Camel". The software system is mainly aimed at the significant upgrade of human bone marrow health. That is to say, installing this software into the pineal gland of the brain will improve the health and progress of bone marrow series cells of people who can use this software system by 40 times. So it is reasonable to use this software.
If you don't understand the concept of elemental iron, you know that iron in meteorites is a crystal of nickel.
122g, with health preserving function.
It is not surprising that the high temperature generated by the fierce friction between these meteorites and the air when they fall into the atmosphere turns them into meteorite iron.
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Is it because of the high temperature caused by friction when the meteorite containing Titan passes through the atmosphere that it is melted again? Because the temperature is just right. And the remaining titanium or titanium alloy.