Each planet revolves around the sun, the planet public transfer Earth and Mars are a little farther away and a little closer, from now on, Mars is constantly approaching the Earth, until December 08, 2022 "Mars opposition" day to declare the end, at this moment, The straight line distance between Mars and the Earth is about 240 million kilometers.
Today, in the Martian world 240 million kilometers away, there are three man-made objects from Earth moving here, namely the American Perseverance, the Chinese Zhurong, and the historic Curiosity, which has been driving in the Gale impact crater of Mars for 9 consecutive years and transmitted hundreds of thousands of Martian landscape photos.
In the past 9 years, Curiosity has traveled 27.5 kilometers, although the curiosity rover is generally advancing to the highest point in the central area of Gale Crater, but the small direction is suddenly left and right, suddenly forward and backward, can not accurately determine the direction, the driving path is also curved.
Gale Crater is the oldest impact crater on the surface of Mars, existing for about 3.8 billion years, 154 kilometers in diameter, in the era when there was a large amount of liquefied water on Mars, Gale Impact Crater is a vast ocean, only the central part has an island, if Mars ever appeared life, then life must be free to reproduce in this ocean.
After a 27.5-kilometer journey, Curiosity boarded a plateau called the "Greenheugh pediment", which is likely to be alluvial from flowing water, and if this is the case, Curiosity will have to explore it well, hoping to find something.
Standing on the plateau, Curiosity's field of vision suddenly became much wider, and this time it can finally condescendingly look back at Mount Sharp, which has been climbed for many years, how can such a good view not take pictures, so Curiosity takes crazy photos, selfie photos and landscape photos.
From the photo, curiosity is located in a very empty place, there is nothing, can not see the distant mountains, can not see the wheel prints of curiosity, can see will be a desert, there is sand, there are stones, but there are no flowers, birds, insects and fish like on the earth, it looks very desolate.
The Martian world is like a desert on the earth, there is no life, it is estimated that there is no sound, if it is here to meditate, it is indeed possible to play a role in doing more with less, perhaps you can figure out the problem of a lifetime, but to survive it is still forget it, it is really not suitable.
Mars, Mars, a fiery red planet, hearing the name, you must think that the Martian world must be as hot as the Earth's desert, but in fact, the temperature of the Martian world is as cold as the South Pole, the maximum temperature is lower than minus 100 degrees Celsius, and the maximum temperature is also more than minus 20 degrees Celsius, which is completely a cold world.
Because since Mars lost the Martian magnetic field, the solar wind can attack the Martian world without restraint, blow away the Martian atmosphere, and take away liquid water, just like this, the Martian atmosphere is taken away bit by bit, including a large amount of liquid water, whether it is the atmosphere, or liquid water is used to keep the planet warm.
Without these two layers of insulation, Mars can not retain the temperature, become as cold as the earth's south pole, is the Mars magnetic field disappeared, so that the Mars climate invalid, which also warns us, we must take good care of the earth, so as not to make the earth's climate invalid, many years ago, Hawking warned human beings, the earth may become a fireball.
The central area of Gale Crater is the highest point of Mount Sharp, with a height of about 5500 meters, even if it is taken to Earth, it is an extremely majestic mountain, and it is estimated that many people will climb it, so curiosity's ultimate goal is to go to the highest point of Sharp Mountain.
But now Curiosity is still far away, at least nearly 40 kilometers away from the highest point of Sharp Hill, and there is certainly no problem in terms of energy, because Curiosity uses nuclear batteries, energy is plentiful, and what we are most worried about is curiosity's wheels, which have been broken many years ago.
Although NASA uses the latest algorithms for the wheels to use them more efficiently, the holes in the wheels have become larger and larger over time, and the straight-line distance of nearly 40 kilometers may be 80 kilometers, for fear that the wheels will collapse if they do not support the highest point of Sharp Mountain. Interesting and informative scientific content, please pay attention to the only WeChat public account: Interesting Exploration