Nowadays, with the development of human science and technology, we have a corresponding understanding of some planets other than the earth, such as Mars, the nearest planet to us except the moon. I sorted out why humans haven't landed on Mars. Welcome to learn from it.
Why haven't humans landed on Mars yet
So far, mankind has found nearly 50 probes to Mars, including orbiters, landers, Mars rovers and so on. Unfortunately, the success rate of the Mars exploration project is less than 50%, and most of the successful probes are launched by NASA. So why is the failure rate of Mars exploration so high? What's more difficult to land on Mars than on the moon? The most important reason is distance.
Mars is the second closest planet to us. Like our earth, it rotates around the sun in a predetermined orbit. Due to the different speed of revolution and the irregularity of orbit, the distance between Mars and the earth is changing almost every moment and every second. Through modern scientific and technological means, we have been able to calculate the distance between earth fires almost accurately. The nearest distance between Mars and the earth is about 55 million kilometers, and the farthest distance is more than 400 million kilometers. Close contact between the two occurs about every 15 years.
In 1988, the distance between Mars and the earth reached about 58.8 million kilometers. In 2018, the distance between the two funds is about 57.6 million kilometers, and the moon is about 380000 kilometers from the earth. In other words, to reach Mars, the exploration system will have to travel at least 144 times the distance between earth and moon. However, because the earth and Mars are constantly changing, it makes it impossible for the probe to fly over the distant interstellar distance in a fixed position. Take NASA's curiosity Mars rover as an example. It was launched on November 26, 2011 and successfully landed on Mars on August 6, 2012. It took about 254 days and 563 million kilometers to finally reach Mars.
At the same time, in the whole universe, visible objects actually occupy only a very small part, and our probe wants to cross the vast galaxy and accurately fall to Mars to determine the position, which is countless times more difficult than throwing a needle from 100 meters away and hitting a designated ant. This requires spiritual navigation and several track changes, as well as preventing the elements of various accidents.
Until now, although humans have been able to land on Mars. However, manned landing on Mars is still far away. Since the gravity on Mars is much greater than that on the moon, it makes it necessary to have a larger probe, which is enough to overcome the gravity of Mars and provide sufficient power to return to the earth. The probe must also ensure that astronauts can continue without any supplies. For at least a year and a half.
Therefore, with the current technology of mankind, there is still a long way to go to cross this "small" solar system. Looking at the whole universe, the human system can get out of this vast starry sky and see how the end of the universe exists and whether there are more universes outside our universe. Maybe we will never know.
Why haven't humans landed on Mars yet
Although the moon is closest to us and humans have already landed on the moon, in the final analysis, people's exploration of the moon is still not as good as Mars. Over the years, there are countless exploration satellites and rovers launched by Mars, which have consumed a lot of financial and material resources. And this also makes many people don't understand. With our current technology, even sending an astronaut to Mars should not be a difficult thing to do. It's always more flexible to detect what data there is in the presence of a real person than a machine! Why haven't humans landed on Mars yet? Scientist: it's not that you can't, but that you dare not!
Why do scientists say that? In fact, scientists have also given an explanation. This is mainly due to gravity. We all know that the gravity of each planet is different. We have landed on the moon and know that the gravity of the moon is much smaller than that of the earth, but Mars is different. Although it is not as good as the earth, it is much higher than the moon. With our current technology, there is naturally no problem for astronauts to go to Mars, but there is a big problem to come back. After all, the distance between the two is not short. If you want to come back from Mars, you must use rockets. However, it is obvious that one or two astronauts alone cannot control such a large project, and it is almost the same with the help of Martians.
Furthermore, we just talked about the distance. At our current speed, it takes at least a year to go back and forth to Mars. However, we have no record of astronauts living in space for a year. That's why scientists say it's not impossible, but dare not!