Crystal is one of the five planets that people can see with the naked eye. In ancient times, the Chinese believed that it was the "spirit of water" and called it Mercury. So there is really water on Mercury. ?
The crystal pen is the most elegant. Its volume is 5.6% of the earth and it is far away, nearly 100 million kilometers away, so it is not easy to see its whole picture clearly. The bigger obstacle is that it is very close to the sun. From the earth, it is sometimes blocked by the sun, and sometimes it is located in the sun. It is in front of the sun and against the bright background of the sun, Mercury is just a small black spot the size of a sesame seed. Even so, There are only 13 opportunities for observation every 100 years. For hundreds of years, astronomers have been troubled by not being able to recognize the face of Mercury.
The mystery of whether there is water on Mercury was not revealed until 1973. A spacecraft launched by the United States took more than 5,000 photos of Mercury from a very close distance and sent them back to Earth. At this point, humans have seen the true face of the water center for the first time. There is no atmosphere in the sky, and the surface is full of large and small craters and basins. On the side facing the sun, the temperature is only 427 degrees Celsius, and on the side facing away from the sun, the temperature drops to below zero. 171 degrees Celsius. Under such conditions, even if water and water vapor once existed, they would have dispersed into the universe long ago.
What we humans see today is just a desolate and dry planet, but the unrealistic name Mercury continues to be used.