7. the moon; There are still different opinions about the origin of the moon, but the supporting evidence is the huge impact hypothesis. The earth may not be the only planet1.500 million kilometers away from the sun. So scientists assume that another primitive planet was formed at the fourth or fifth Lagrangian point, which is1.500 million kilometers away from the sun and the earth. This planet is named Taiya, which is supposed to be smaller than the present earth and similar in size and mass to Mars. Its orbit should be stable at first, but later it was disturbed by the increasing mass of the earth. Taiya began to turn around and approach the earth, and finally collided with the earth at a low oblique angle about 4.533 billion years ago (about the morning of 12: 05 of an imaginary clock). Its low speed and low angle are not enough to destroy the earth, but enough to eject most of the crust. The heavy metals that make up the Atayal tribe sink into the core, while the remaining materials and ejecta freeze into individuals within a few weeks. Under the influence of its own gravity, it becomes a relatively spherical individual in a year or so, that is, the moon. It is also believed that the impact tilted the earth's axis of rotation by 23.5 degrees, giving the earth four seasons. A simple and perfect star should have no inclination of its axis of rotation and no obvious seasons. It may also accelerate the earth's rotation speed and make the earth have plate structure. 18. The emergence of human beings; Six million years ago (1 1: 58 pm), a small number of apes living in Africa were the last common ancestor of modern humans and their close relatives chimpanzees. Only two branches of his family are still alive. Shortly after being separated from his family, one of the apes developed the ability to stand and walk, and the reason is still under debate. Its brain grew rapidly, and about two million years ago (the assumed clock in this entry is 1 1: 59: 22 in the afternoon, that is, 38 seconds before midnight), the first animal of the genus man and beast appeared. The species and even genera of each generation of organic organisms may be different. At about the same time, another branch split into the ancestors of the common chimpanzee (mon chimpanzee) and bonobo, and this evolution continued in all life. [66] Homo erectus mastered the ability to control fire at the latest 790,000 years ago [69], but it may have been mastered as early as 1500,000 years ago (the last 28 seconds of the clock assumed in this entry are15 seconds). It is more difficult to study the origin of language; Because it's hard to know whether Homo erectus was able to speak or not until Homo sapiens was able to speak. With the increase of brain volume, the baby will give birth faster and will be born before the head grows bigger than the pelvis. Therefore, the adaptability is higher, the learning ability is stronger, but the time of relying on others is longer. Social skills become more complex, languages become more advanced and tools become more complex. This is conducive to long-term cooperation and brain development. Homo sapiens, an anatomically modern man, is believed to have been born somewhere in Africa 200,000 years ago (the last 2 seconds of the clock assumed in this entry) or earlier. The oldest Homo sapiens fossils can be traced back to160,000 years ago. [73] The first human being with mental activity was Neanderthals (usually classified as having no offspring); They will bury other people's bodies after they die, and usually they will use food or tools as funerary objects. However, evidence of humans with more complex beliefs, such as cave paintings of Kroma's early Ke Romanu people (which may have the importance of magic or belief), did not appear until 32,000 years ago (the last 0.6 seconds of the clock assumed in this entry). Farmers in Kroma and small stone statues such as Venus of Willendorf may also have the meaning of faith. Eleven thousand years ago (the last 0.2 seconds of the clock assumed in this entry), some Homo sapiens arrived at the southern tip of South America, the last inhabited continent. At this time, the tools and languages used by human beings are constantly improving; And interpersonal relationships have become more complicated. 3. The Milky Way; According to the research report of the European Southern Observatory (ESO), it is estimated that the age of the Milky Way is about 65.438+036 billion years (654.38+009), almost as old as the universe. Astronomer Luca Pasquini

Pirlo bonifacio

Sophia Randic

Daniel Gali

In 2004, a team composed of Andre G. graton. Beryllium was first discovered in two stars of globular cluster NGC 6397 by VLT's ultraviolet vision matrix spectrometer. This discovery has enabled them to advance the alternation time between the first generation of stars and the second generation of stars by 200-300 million years, so the age of globular clusters is estimated to be 134 8 billion years old, so the age of the Milky Way will not be lower than 136 8 billion years old. 2008-09-018: 03: 09 Supplement: 4. It is believed that the formation of the solar system should be based on the nebula hypothesis, which was first put forward by Kant in 1755 and Laplace in 1796. According to this theory, the solar system was formed by the collapse of a huge molecular cloud 4.6 billion years ago. This nebula was originally several light-years in size, and several stars were born at the same time. The study of elements dating back to ancient meteorites shows that only the heart part of supernova explosion can produce these elements, so the cluster containing the sun must be near the supernova remnant. It may be that the shock wave generated by the supernova explosion increased the density of the nebula near the sun, which enabled gravity to overcome the expansion pressure of the internal gas and lead to collapse, thus triggering the birth of the sun. 2008-09-018: 04: 43 Supplement: 6. The earth is one of the planets in the solar system, ranking third in the order from near to far from the sun. It is the largest terrestrial planet in the solar system and the only planet that has been confirmed by modern science to have life. Scientists estimate that the age of the earth is about 4.57 billion years (4.57× 109). Shortly after the formation of the planet, it may be hit by a small celestial body, resulting in a natural satellite-the moon. 2008-09-018: 06: 06 Supplement: 6. } The history of the earth, after the earth is composed of some materials of the Taiyang Yuan Nebula, scientists estimate that it is about 4.57 billion years. Because it is difficult to express such a long time, we can set the time for the formation of the earth at 0: 00 am, while the modern time is 0: 00 am. The historical simulation of the earth is 24 hours, which represents about 53,000 years per second. The time for the Big Bang and the formation of the universe is about 137 billion years ago [1], which is about three days ago, that is, two days before the birth of the earth. 2008-09-018: 08: 38 Supplement: 14. 15. Dinosaur (scientific name: dinosaur) is a group of diversified dominant vertebrates in Mesozoic, which dominated the global terrestrial ecosystem for more than1600,000 years. Dinosaurs first appeared in the Triassic period 230 million years ago and died out in the late Cretaceous period about 65 million years ago. 2008-09-0 1 1 8:12:19 supplement:112; Hundreds of millions of years ago, plants (probably algae) and fungi began to live on the edge of water and land, and then lived without water. [45] After determining the fossils of the oldest terrestrial eumycetes and plants, it is known that they should have lived about 480 million to 460 million years ago (9: 28 pm to 9: 34 pm in this entry), although molecular evidence shows that fungi may have settled on land one billion years ago (6: 40 pm in this entry); As early as 700 million years ago, plants settled in this land (the assumed time in this entry is 8: 20 pm). September-0, 2008118:13: 00 Supplement:11; At first, 12} still lived on the edge of water, but the constant colonization in this new environment made mutations and changes begin to appear. However, the time of the first animal to leave the ocean is unknown. The clearest and oldest evidence known shows that arthropods appeared on land about 450 million years ago (9: 40 pm on the clock assumed in this entry). The reason why they can reproduce and adapt better on land may be because the plants on land provide a large number of food sources. There is also some uncertain evidence that as early as 530 million years ago, that is, 440 million years ago (9: 40 pm on this hypothetical clock), arthropods may have appeared on land before the end of Ordovician, and another extinction event may have occurred because of the ice age. 2008-09-0118:13:10 Supplement: 1: 12 "} About 380 million years ago to 375 million years ago (this item is assumed to be 654400 in the afternoon. It is estimated that shark fins evolved into limbs so that the first quadruped could stick its head out of the water to breathe air. This enables it to survive in anoxic waters or prey in shallow waters. It may venture on land in the next few years. Finally, some of them may become very adapted to land life and live on land as adults, although they hatch and lay eggs in water. This is the origin of amphibians. About 365 million years ago (10: 04 pm of this fake clock), another extinction event occurred, which may be the result of global cooling. [5 1] Plants began to contain seeds, which greatly increased the speed of their reproduction on land, about 360 million years ago (1pm of the clock assumed in this entry). September 2008-0118:14: 37 Supplement:13.14.15; About 20 million years later (340 million years ago; This entry assumes that the clock is 10 (12 pm), and the evolution of chorionic eggs enables eggs to lay eggs on land, which is the survival advantage of quadruped embryos. This separates amniotic animals from amphibians. Another 30 million years passed (3. 1 100 million years ago; This entry assumes that the clock is 10: 22 pm), and the sea dragon (including mammals) is separated from sauropods (including birds and non-birds and non-mammal reptiles). September 2008-0118:14: 53 Supplement:13.14.15; Of course, other kinds of organisms are constantly evolving and separated into: fish, insects and bacteria, but the specific details are unknown. 300 million years ago (the clock assumed in this entry is 10: 25 pm), the latest supercontinent Pangu was formed. The most serious extinction event occurred 250 million years ago (the clock assumed in this entry is 10: 40 pm), at the junction of Permian and Triassic; 95% of the creatures on the earth die, which may be caused by the continuous eruption of volcanoes in the Siberian subsidence. However, life is still not completely extinct, and a small part of life continues to exist. About 230 million years ago (10: 47 pm of the clock assumed in this entry), dinosaurs separated from their reptile ancestors. September-0118:15: 00, 2008 Supplement:13.14.15; Most dinosaurs successfully survived the Triassic-Jurassic extinction event 200 million years ago (the clock 10: 56 pm assumed in this entry), and they soon became the overlord of vertebrates. Although some mammals were isolated during this period, all the existing animals are tiny animals such as shrews. [59]1.800 million years ago (the clock assumed in this entry is 1 1: 03 pm), Pangu was divided into Laoya and Gondwana.

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