Is it a one-way ticket for humans to land on Mars? What is the scientist's answer?

Humans have lived on the earth for millions of years. Through long-term development and evolution, their ability has become more and more powerful. Today, human beings are intelligent creatures on the earth, standing at the top of the food chain. However, with the continuous development of mankind, the population will continue to grow in the future, and the demand for earth resources will be even greater.

However, now the resources of the earth are becoming more and more exhausted. With the shortage of resources, it is difficult for human beings to survive and develop. If this trend is allowed to continue, the earth will probably no longer be the only home for mankind in the future. Hawking said in 20 17 that with the growth of the earth's population, energy consumption will increase and the earth will become a? A burning fireball? . Hawking believes that to get rid of this disaster, we can only find a planet suitable for human survival.

In order to save mankind and make it develop in the longer term, scientists put forward a plan to immigrate into space. In this vast space, there are various celestial bodies. Do humans want to find them? A second home? It's really harder. This difficulty is like looking for a needle in a haystack. After all, human beings can't even fly out of the solar system at present. How to realize the space immigration plan?

At present, human beings can only put their hopes of moving into space on Mars. Although Mars is a desert planet with drought and water shortage, the land is very barren, but after years of exploration by scientists, water resources have finally been discovered on Mars. July 20 18, AFP reported that the first liquid water lake was discovered on Mars. According to the report, scientists have discovered a huge underground aquifer on Mars, which increases the possibility that Mars is livable.

Besides? Curiosity? When analyzing Martian rock samples, it is found that the samples contain phosphorus, nitrogen, hydrogen, oxygen and carbon, which are the key chemical components to support the existence of life, so Mars is likely to become human? A second home? . Musk, the founder of space exploration technology company, once proposed the Mars immigration plan. According to the White House plan, Americans will land on Mars in 2030.

However, landing on Mars is completely different from landing on the moon, and it is also very difficult. Because the mass of the moon is relatively small, about one-eightieth of that of the earth, and its gravity is also very small, only one-sixth of that of the earth, so landing on the moon only needs general thrust, and when returning, the distance to the moon is close to the earth, so returning to the earth only needs general thrust. Under the thrust, the spacecraft can easily get rid of the gravity of the moon and fly back to Earth.

However, Mars is not a satellite of the Earth. It is an independent celestial body, its mass is 1 1% of that of the earth, and its surface gravity is about 2/5 of that of the earth. Although Mars is not as heavy as the earth, its gravity is much greater than that of the moon, and it is far away from the earth. Therefore, if humans want to land on Mars, the spacecraft will need more thrust and more fuel.

Send humans to Mars with strong thrust, but if humans want to return to Earth, there is not enough fuel. Even if a large amount of fuel is transported from the earth to Mars, this method is not practical, because according to scientists' estimates, the fuel needed for human beings to return to the earth is very huge, and the cost will be higher, which is beyond human capabilities.

According to the scientist, landing on Mars is doomed to be a journey without turning back, and going to Mars is doomed to be a one-way ticket. Some scientists say that even if humans successfully land on Mars, they can only live for three months, only 68 days. A five-member team at MIT used Holland? Mars one? According to the data of space launch company, the mathematical formulas of oxygen, food and technology needed by human beings to immigrate to Mars are analyzed, and it is considered that it is impossible to immigrate to Mars because of the conditions on Mars and the limitations of human existing technology.

The report points out that because of the complex environment and lack of oxygen on Mars, only plants brought from the earth can be produced? Unsafe? The amount of oxygen, about two months later, the oxygen content will start to run out. About 68 days later, the first death may occur? Moreover, the shortage of materials on Mars will accelerate the death of human beings, so many scientists do not support landing on Mars.

If human beings want to move to Mars, they need to build at least bases, supporting infrastructure and other equipment, and have enough oxygen, so as to prevent the crisis of human survival. But these projects not only need huge funds, but also are very difficult, so it is difficult for human beings to overcome these technical problems. Scientist Robert? Zubolin thinks it will take at least about 1000 years to complete these buildings.

According to these views of scientists, landing on Mars is a risky thing, and there is no guarantee that it will be foolproof, and human beings cannot rashly enter.