As one of the eight planets in the solar system, human beings have a special liking for Mars. Why are humans so interested in Mars? This problem can be traced back to19th century 1877. That year, Mars was very close to the earth, only 64.37 million kilometers. European astronomers found this a rare opportunity to observe Mars, so they took out the most advanced telescope at that time. One of them is Italian Mars observer Giovanni szilard Pere. Through his telescope, he saw some amazing details on Mars. The surface of Mars is covered with a very fine linear network, which elsa schiaparelli called a "ditch". This is the picture below, just to let you feel the mystery of this picture. This is the long-standing "Mars Canal" in western countries.

Intelligent life digging canals on Mars? One hundred and forty years ago, when modern astronomy was just emerging, the surface of a planet was not the earth, but was shown to the world through a less advanced telescope. This really caused quite a stir. For a long time, the "Mars Canal" has aroused people's strong interest in Mars, and it is believed that there are advanced intelligent life "Martians" on Mars like human beings. There were even 19 18 sci-fi movies about Mars, which were still silent films in black and white. It was not until 1964 that sailors sent back the first clear picture of Mars that people discovered that the canal did not exist, but was desolate and dead.

In this disappointment, Viking 1 launched by 1975 sent back another amazing photo. This is a face on Mars, and it has caused quite a stir. Although it has been confirmed now, this is only because the shooting angle is wrong. Mars seems to tease our curious nerves all the time. With the deepening of scientists' exploration of Mars, they found more and more charm of Mars.

Carl sagan, a famous American astronomer, put forward many arguments for human exploration of Mars in his report to NASA. Mars is one of the closest planets to the earth. About 4 billion years ago, its environment was similar to that of the earth, with rivers and oceans. Exploring the causes of climate change on Mars is of great significance for protecting the climate conditions of the earth. Due to historical reasons, the public has shown great enthusiasm for the support of Mars exploration. Mars in the future is likely to be the second home of mankind.