About 654.38+0.5 billion years ago, this primitive fireball suddenly exploded, throwing matter around and creating the universe. From then on, the universe began to expand, and the temperature decreased with the expansion of space. When the age of the universe is 10-44 seconds, the temperature is as high as 1032℃. After this moment, that is, 10-34 seconds later, the universe suddenly "expanded", just like an adult suddenly blew a big balloon violently, BIGBANG, and the explosion instantly expanded the universe 1029. 0.0 1 s after the big bang, the temperature of the universe dropped to1011℃; After 0. 1 s, the temperature drops to 30 billion degrees; 13.8 seconds later, the temperature further dropped to 3 billion degrees; In 35 minutes, the temperature has dropped to 300 million degrees. 300,000 years after the Big Bang, the temperature dropped to 3,000℃, and the universe began to become transparent, during which chemical elements began to form. For 654.38+0.5 billion years, the universe has been expanding and the temperature has been gradually decreasing. At the same time, creatures were born and multiplied. Some people, like drawing a map on a scale, condense the 65.438+0.5 billion years of the evolution of the universe into one year, which gives us an extremely intuitive and interesting "cosmic calendar": 654.38+10.654.38+00, the big bang, the universe stands out; 1 May, the vast Milky Way was born; On September 9, the solar system came out; /kloc-in September of 0/4, the earth was formed; On September 24, primitive life appeared on the earth; 165438+1October 12, green plants break ground; 12 On February 26th, more advanced mammals appeared; At 0: 22: 30 on February 3 1 day, primitive humans stood on the earth; In 23 minutes and 46 seconds, Beijingers created a fire; 23 minutes and 59 seconds, the history of China continued into the Spring and Autumn Period ... Song Dynasty; At 24: 00, the world entered the modern society that continues to this day. It can be seen that the history of mankind is only a very short moment in the universe. The establishment of the Big Bang Cosmology marks that mankind has pushed open the door of the universe with scientific speculation and has become an important milestone in the history of human civilization. 1964, penzias and Wilson discovered the 3K microwave background radiation of "the remains of BIGBANG" in space with a radio telescope, which confirmed the correctness of "BIGBANG" theory, so they won the Nobel Prize in 1978. In 1980s, the research team led by Ding Zhaozhong, the Nobel Prize winner in physics, built a super accelerator named "Lepo" in Switzerland to simulate the explosion of the universe. The circumference of the accelerator is 27 kilometers, and its huge body will extend from the plain near Geneva, Switzerland to the foot of Ziluo Mountain in France. All cables and machines are buried 50 ~ 100 meters underground. The research team put about 1 100 million volts of electrons into a particle accelerator and collided with the same high-voltage antielectrons. This billionth of a second impact will stimulate tens of billions of times the surface temperature of the sun, simulating the first moment when the world opened: the explosion of the universe. 1989 1 1 year 1 October, the United States launched the Cosmic Background Explorer (Cobe for short),1February, 2008, when COBE first explored deep space, it saw a perfect universe, with neither shape nor variation, and the afterglow of the Big Bang was magnificent. "Cobb" confirmed that the universe began with a violent big bang and expanded evenly, cooling to its present state. American scientists have recently observed a cloud cluster 65.438+0.5 billion light years away from the Earth, which is the largest and most distant celestial body ever observed. The appearance and existence of these clouds were caused by the Big Bang. NASA's Cosmic Background Detector (COBE) also found the remnants of the original fireball when the universe was born. The latest results of the team show that the Big Bang cosmology has passed the most severe test.