Day after day. In the Eastern Han Dynasty, Zheng Xuan wrote clouds and Chang Gung, without true light, saying that the star was Qi Ming; With the coming of the day, this star is called Chang Geng: Qi Ming in the East and Chang Geng in Venus at night are the names of this day. Xiaoya. Hairy mussels spread the cloud in the Western Han Dynasty. Dadong said, there is Chang Geng in the west: realize the Tao and give alms after a day. Geng, known as Qi Ming in the morning, is a Venus, also known as Taibai and Chang Geng. It is the star that rises first and sets last every day.
Venus
Because Venus appeared in the sky in the morning and evening respectively, it was called Taibai or Taibai Venus in ancient China, Qi Ming in the morning star and Chang Gung Memorial in China history books. Ancient astrologers always thought that there were two such planets, so they were called "morning star" and "evening star" respectively. In English, Venus is the ancient Roman god of love and beauty. It has been shrouded in a mysterious veil by curly clouds.
Venus is the second farthest planet from the sun and the brightest star in the sky, with the maximum brightness of -4.4, which is 14 times brighter than the famous Sirius. Venus is a galaxy on the earth, so it is sometimes the morning star and sometimes the evening star. Venus has not been found to have satellites. Because Venus and Earth are very similar in size, mass, density and weight, and Venus and Earth are almost all formed by the same nebula at the same time, astrologers regard them as sister planets. However, not long ago, scientists discovered that Venus is actually very different from the Earth. There is no ocean on Venus. It is surrounded by a thick atmosphere, the main component of which is carbon dioxide, and there is no water at all. Its cloud is made up of sulfuric acid drops. On the surface, its atmospheric pressure is 92 times of the earth's sea level.
Due to the "greenhouse effect" caused by Venus' thick carbon dioxide atmosphere, the surface temperature of Venus is as high as 482℃, and sunlight heats the surface of Venus through the atmosphere. The heat on the earth's surface is blocked by the atmosphere in the process of outward radiation and cannot be radiated to outer space. This makes Venus hotter than Mercury. A day on Venus is equivalent to 243 days on Earth, which is longer than 225 days in a year. Venus rotates from east to west, which means that on Venus, the sun rises in the west and sets in the east.
The surface of Venus is randomly covered with many small craters. Because Venus has a thick atmosphere, craters with a diameter of less than 2 kilometers can hardly be preserved. However, when large meteorites hit the surface of Venus before the formation of small craters, the fragments they produced produced produced a group of special craters on the surface. There are many volcanoes and volcanic activities on the surface of Venus. At least 85% of Venus is covered by volcanic rocks. A large number of lava flows through hundreds of kilometers, filling the lowlands and forming a vast plain. In addition to hundreds of large volcanoes, more than 100000 small craters dot the surface of Venus. The lava flow from the volcano has produced long ditches, covering hundreds of kilometers, one of which is more than 7000 kilometers.