Since you want to immigrate, of course you have to find a place that is most suitable for human life.

There are indeed planets similar to the Earth in the universe, such as "Kepler 452B" discovered by NASA in 2015, "Earth's twin brother" Proxima Centauri b discovered in 2016, and the habitable star Trappist-1 discovered in February 2017

3 habitable planets within the belt, etc.

However, the distance between these planets and the earth is tens of light years or even further, and current aircraft technology is far from being able to achieve manned arrival.

Within the solar system, humans cannot land on planets with too much gravity. Humans cannot survive in extremely cold and extremely hot environments. Too far away from the earth and the round trip time will be too long. And the environment of Venus is too harsh. After removing these options, there is only

That leaves Mars.

Based on current knowledge, Mars is indeed the most promising extraterrestrial planet for manned landing.

However, its environment is still quite different from that of Earth: Mars' surface gravity is about 38% of Earth's, its air pressure is less than 1% of Earth's, 95% of its atmosphere is carbon dioxide, its average temperature is -63°C, and its rotation period is 24.6 hours.

However, this is our best choice.

What are the technical difficulties in landing on Mars?

If you say it so beautifully, why don’t you go to Mars quickly?

Wait, there are still some technical difficulties.

If humans go to Mars, based on current transfer capabilities, the entire mission will take more than 500 days.

These more than 500 days of interstellar flight and stay on the surface of Mars will face many difficulties and challenges.

From a human perspective, the main difficulties in landing on Mars are: radiation protection, weight loss issues, nutrition and food, and environmental control and life support systems.

There are also issues such as medical support, psychological maintenance, living material support and extravehicular operations, as well as other technical difficulties, such as building a new spacecraft, designing a Mars lander, and designing a return and reentry system.

These problems need to be overcome, and there is a long way to go!

How much do you know about the Mars immigration plan? Although there are many technical problems that have not yet been solved for landing on Mars, this does not hinder mankind's enthusiasm for planning to immigrate to Mars.

Humanity's "Mars Dream" has several preliminary plans.

1. Mars One Immigration Plan This plan was launched by Bas Langsdorp in June 2012. It plans to launch a Mars probe in 2018. The first batch of materials will arrive on Mars in 2020, and manufacturing of equipment on Mars will begin in 2021.

Water and oxygen for astronauts. When the first astronauts arrive on Mars in 2023, they can start growing and obtaining food on Mars.

2. Mars Colonization Plan On November 22, 2012, Elon Musk of SpaceX launched the Mars Colonization Plan: to send 10 warriors to Mars to establish a colony first, and when the time is right, they will gradually expand the scale of the colony, and finally in the next 15 years

~About 80,000 people are expected to settle on Mars within 20 years.

3. Inspiration Mars Plan This plan was launched by Dennis Tito (the first space tourist) on April 22, 2013. The content is: it will be realized as early as December 2017 and will use the Falcon produced by the Space Exploration Technology Company in California.

The heavy rocket and Dragon spacecraft sent two astronauts into space and flew around Mars without entering the orbit of Mars. The whole process lasted 501 days.

However, Professor Scott Hubbard of Stanford University believes that the technical report of the "Inspiration Mars Foundation" is "longer than inspiration, shorter than technical details, and needs to be adjusted."

4. Zubrin’s Mars transformation plan.

This plan strives to realize the transformation of Mars from red Mars to green Mars and then to blue Mars. There are five main stages: ① Warming Mars; ② The soil heats up, releasing carbon dioxide, causing the temperature of Mars to increase, and the water ice material in the soil melts

, evaporate, forming weather phenomena such as rain and snow; ③ The temperature at the equator of Mars reaches above 0℃, plant plants to establish an ecological environment on the surface of Mars; ④ Plant various plants on a large scale to develop agriculture, and scientists cultivate "super plants" to release large amounts of oxygen; ⑤

While waiting for the Martian plants to release enough oxygen for humans to breathe freely, the work in stages three and four is repeated.

Many scientists believe that the terraforming of Mars will take 20,000 to 100,000 years, which is far out of reach.

But scientist Robert Zuberin, founder of the Mars Society, believes that this process will only take about 1,000 years to complete.