Why do Martian immigrants never return to Earth once they set off?

Landing on Mars cannot return to Earth because the gravitational pull of the Moon is only one-sixth of that of the Earth, which is relatively small in size compared to the Earth, and the aerospacecraft can get rid of such gravity. The mass of the Earth is larger than that of Mars, equivalent to one-third of the Earth, and if you want to successfully enter space from the surface of Mars, you also need a lot of thrust, and this thrust must be boosted by a rocket to enter space.

Mars is still far away from Earth, so even if it takes a long time to come back. Maintaining the supplies needed by the crew during this time is also a serious problem, and it is even more difficult to keep the supplies needed for the return trip. Therefore, this is also the reason why human beings have been exploring Mars for many years now, and still have not gone to Mars for manned landing.

It is relatively easy to achieve a one-way ticket to Mars manned. It is possible for a spacecraft to fly to Mars, but it is also a very important issue to come back, and the energy reserve is not enough, so more advanced technology is needed.

Terraforming the Martian Environment: A Characterization Analysis.

1. There are essential elements to sustain life.

Although Venus has always been called the sister planet of Earth, the environment of this blazing planet is too uninhabitable for human habitation. Mars, on the other hand, is the second closest planet to Earth. Although it is still a cold and dry planet, it has all the necessary elements to sustain life, including:

Water, possibly in frozen form, carbon and oxygen in the polar ice caps of Mars, in the form of carbon dioxide.

CO2), nitrogen.

Mars' current atmosphere bears a striking resemblance to Earth's atmosphere billions of years ago. When the Earth was first formed, oxygen was absent and it appeared to be a desolate, barren land. The atmosphere is made entirely of carbon dioxide and nitrogen.

It wasn't until photosynthetic bacteria evolved on Earth that enough oxygen was produced to evolve animals. Similarly, the thin atmosphere on Mars is now almost entirely made up of carbon dioxide.

2. The composition of the Martian atmosphere.

of carbon dioxide.

of nitrogen. of argon.

of oxygen. In contrast, the Earth's atmosphere is made up of nitrogen, oxygen, argon, carbon dioxide and other gases. As can be seen from this detailed comparison, all humans visiting Mars now have to carry large amounts of oxygen and nitrogen to sustain life.

3. Temperature. The average surface temperature of Mars is as low as the maximum temperature and the minimum temperature is lower than that of the Earth.

Comparison of Mars before and after the terraforming of Mars.

Similar features. Still, Mars has several characteristics that are very similar to Earth that have led people to consider it as a place to live, including:

The rotation rate is 24 hours and 37 minutes (Earth: 23 hours and 56 minutes).

The axis of rotation is tilted to 24 degrees (degrees for the earth).

Gravitational force is one-third of the gravitational pull of the Earth.

The distance from the sun is close enough that there are seasons. Mars is about 50% farther from the Sun than Earth is from the Sun.

I think it's because the journey back to Earth from Mars is very difficult, and there are many restrictions.

For a spacecraft to return to Earth, it needs a lot of booster fuel, but this cost is too high.

Because although the technology is developing rapidly, there are still certain drawbacks, so it should not have been detected yet.

Because the temperature on Mars is very high, and there is a moon in the middle.

That's because the conditions for Mars to return to Earth are harsh, making it difficult to achieve.

The cost of the need is higher than the ** value of the ship, so there is no need.

Because there is no advanced science and technology, humans are now exploring ways to return to Earth from Mars.

It may be that the speed on the way back is not good, and it is not easy to control the temperature.

This may be because the conditions of this place are not up to the level of return.

It may be that the technology in this area has encountered great limitations and is not easy to control.

Because Mars is the most suitable place for human life in the solar system, and Mars is also the most promising extraterrestrial planet for manned landing. Within the solar system, planets with too much gravity cannot be landed by humans, extremely cold and extremely hot environments cannot be survived by humans, too far away from the Earth will lead to long round-trip times, and the environment of Venus is too harsh, after removing these options, only Mars remains.

How much do you know about the Mars immigration program.

Although there are many technical difficulties in landing on Mars that have not yet been solved, it does not hinder the enthusiasm of human beings to plan their migration to Mars. Humanity's "Martian dream" has several preliminary plans.

1.Mars One Immigration Program.

Launched in June 2012 by Buzz Langsdorp, the program plans to launch a Mars rover in 2018, the first supplies will arrive on Mars in 2020, the equipment on Mars will begin to produce water and oxygen for astronauts in 2021, and the first astronauts will start growing food and obtaining food on Mars when they arrive on Mars in 2023.

2.Mars colonization plan.

On November 22, 2012, Ellen Musk of SpaceX launched the Mars colonization plan: send 10 warriors to Mars to establish a colony in advance, and then gradually expand the colonization scale when the time is ripe, and finally about 80,000 people are expected to settle on Mars in the next 15 20 years.

3.Inspiration for the Mars Project.

Launched on April 22, 2013 by Dennis Tito (the first space tourist), the program will take two astronauts into space using a California-based SpaceExploration Technology Falcon Heavy rocket and the Dragon spacecraft, a process that will take 501 days to fly around Mars without entering the orbit of Mars. However, Professor Scott Hubbard of Stanford University believes that the technical report of the Inspiration Mars Conference is "longer than inspiration, shorter than technical details, and needs to be adjusted".

4.Zubrin's Mars Transformation Program.

The project seeks to transform Mars from red Mars to green Mars to blue Mars, with five main phases: warming Mars; The soil warms up, releasing carbon dioxide, which increases the temperature of Mars, and the water and ice materials in the soil melt and evaporate, forming weather phenomena such as rain and snow. When the temperature of the Martian equator reaches above 0, plants are planted to establish the ecological environment on the surface of Mars; Large-scale cultivation of various plants, the development of agriculture, the cultivation of "super plants" by scientists to release large amounts of oxygen; While waiting for the Martian plants to release enough oxygen for humans to breathe freely, repeat.

Phase III and IV work.

One is that sooner or later the earth will become unsuitable for life, and the second is that the earth is overwhelmed by population growth.

There is no need, only need.

Sooner or later, the Earth will not be suitable for human life, so isn't Mars older? It's even more unsuitable for human survival, why go for it?