生物的起源于演化（The origin of biology in evolution）.docVIP

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生物的起源于演化（The origin of biology in evolution）.doc

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生物的起源于演化（The origin of biology in evolution）

生物的起源于演化（The origin of biology in evolution） There are many kinds of elements on the earth, but there are not many elements that make up life. There are four kinds of C, H, O and N. Besides, there are S, P and other trace elements. We know that the major components of life are proteins, water and inorganic salts in three broad categories. Elemental analysis showed that proteins generally contain carbon 50% ~ 55%, oxygen 20% ~ 23%, nitrogen 15% ~ 18%, hydrogen 6% ~ 8%, sulfur 0% ~ 4%, and some proteins also contain trace amounts of P, Fe, Zn, Cu, Mo and so on. In the past, there was no matter in interstellar space, and it was an absolute vacuum. In 1930, when measuring the diameter of the open cluster star, the blue star detected starlight extinction in space, and interstellar dust was discovered. Since 1950s, more and more interstellar materials have been detected because of the advances in infrared and radio observational techniques and experimental spectroscopic studies. Especially in 1969, Snyder (L.E.Snyder) observed in organic molecules of formaldehyde (HCHO) of the 6cm line, caused a sensation in the world, known as the great discovery in 1960s astrophysics, his discovery also inspired astronomers to explore interstellar molecules enthusiasm. By 1991, 92 interstellar molecules and more than 2000 molecular lines had been found. The latest news is radio astronomer Luis Shinde of the Illinois State University found that life in the Milky Way molecules - amino acids near the center line of the nebula by spectrum, this finding may explain the origin of life. Common interstellar organic molecules tells us that in the cosmic star system, have the life conditions on the planet (earth) is a large number of those planets will appear in life, and for the evolution of intelligence. Therefore, exploring life in the universe will be the next human quest for understanding. Comets are a very special kind of stars, which may have important links with the origin of life. Comets