On May 5, 2018, the United States launched the “insight” unmanned Mars Lander, which will land at the equator of Mars on November 26, 2018 and be permanently placed on the surface of Mars.
In fact, the exploration of Mars has been started for a long time, because according to scientific reports, the climate of Mars 4 billion years ago is very similar to that of the earth, and it once had oceans. Moreover, the planet is relatively close to the earth. Scientists have been searching for the mystery of life on Mars, and hope that maybe one day humans can migrate to Mars. So over the years, many countries have been trying to find out more about the data from Mars and the evidence of life. The first one is 50 years away. It was launched by the former Soviet Union in 1960. Until 2011, Russia launched a total of 20 Mars probes, but none of them succeeded. China also put in its first Mars probe on the zenith carrier rocket launched in 2011, but it failed because the rocket failed to enter orbit. Mariner 4, a successful probe, was launched on November 28, 1964 and flew over Mars from July 14 to July 15, 1965. At an altitude of 10000 km from Mars, 21 photos were taken and sent back to the earth. Surface pressure and daytime temperature (100 degrees Celsius) were also detected for the first time. After that, different countries have continuously launched more than 40 probes to Mars, with a success rate of only 40%. Successful probes have continuously sent data to the earth. It can be concluded that the rotation mode and the alternation of seasons of Mars are very similar to the earth, and the Mars day and the Earth Day are almost the same length. Now there is no water on the surface of Mars, probably because of the temperature Water can’t exist in liquid form because of its high temperature, but it has mountains, river beds, even traces of the ocean, and there have been earthquakes.
America’s spirit and opportunity, these two rovers “Extended service”, working on the surface of Mars for quite a long time. They landed on Mars on January 3 and 25, 2014 respectively. Until 2018, opportunity could still walk freely on the surface of Mars, but in June 2018, there was a huge sandstorm on Mars, and NASA lost contact with opportunity. What they have achieved is great: the discovery of salt and iron ore, a meteorite, rich groundwater on Mars, and even a solar eclipse on the surface of Mars. And we look forward to the arrival of insight in a few months to bring us more information and new discoveries!