Why did Chang e 4 conduct satellite biosphere experiments on the surface of the moon?

Because the moon has no atmosphere, the surface of the moon is actually similar to a vacuum, and life cannot directly survive on it, so it can only do experiments on the surface of the moon.

Because experimenting on the surface of the moon can solve the communication problem between the Earth and the moon.

Because only the surface of the moon can survive life.

This can help us better understand the ecology of other planets.

The Chang'e-4 lunar microsphere is the same as that of Yuegong-1 on Earth.

In order to explore the construction of artificial ecosphere.

In order to be more experienced when acting on other planets in the future.

Realize a life cycle of plants and animals on the surface of the moon.

Because the moon is near, I hope the moon is suitable for human habitation.

1. The Moon will always only face the Earth head-on

It may be hard for you to imagine that since the age of the dinosaurs, although there have been clouds and sunshine of the moon every day, we and the dinosaurs have seen the same side of the moon - on the front, the moon has never 'turned' for the earth.

2. Why is the moon "only positive"?

The Earth has a strong tidal lock to the Moon, and the Moon's orbit around the Earth is exactly equivalent to the rotation period, resulting in only the front side of the Moon being visible from the Earth.

3. Why is it difficult to reach the far side of the Moon?

Because of years of exploration and the maturity of telescope technology, every crater or other surface change on the front side of the moon can be understood not only by scientists, but also by many astronomy enthusiasts with a good telescope.

But the situation on the back side is completely different, first of all, the observed data is much smaller than the front side, and the picture can only be obtained from a space telescope. The second is that landing on the far side of the moon will definitely encounter the problem of 'no signal', and the probe will block the signal by landing on the back side of the moon, and we have solved this problem by laying the 'Queqiao' relay satellite in advance.

4. What is the international evaluation of landing on the far side of the moon?

What most netizens don't know is that the first official announcement of Chang'e-4's landing was actually on Twitter, which immediately caused a sensation abroad. To put it simply, it can be evaluated like this: in the cause of exploring the moon, China is once again standing on the threshold of making history!

1. The far side of the moon is almost entirely crater craters (, which are much more numerous than the front one (69%), and the causes of formation and the current situation are only theoretically explained, and there is a lack of field verification;

2. The South Pole-Aitken Basin on the far side of the Moon is the second largest super crater in the solar system, as early as 1998, NASA's Lunar Prospector found that there is water ice here, and it is closer to the most primitive situation of the Moon;

3. The actual landing site of Chang'e-4 is located in the von Kármán crater in the middle of the region, which is named after Qian Xuesen's mentor. It has undergone a strong collision, most likely once submerged in lava, and is rich in all kinds of materials, perhaps leaving the most primitive components of the lunar mantle, which retains the deepest secrets of the moon;

4. "The development of helium-3 energy on the moon can provide human energy demand for xx trillion years", I believe you have seen a lot, and theoretically the environment on the far side of the moon is more likely to produce helium-3;

5. There is a natural "shield" on the far side of the moon, without any radiation interference from the earth, which means that it has an incomparably perfect quiet environment for astronomical observations;

6. The lunar soil on the far side of the Moon is also very likely to be very different from the front side.

Because it was easier to land on the far side of the moon, he chose the way to this place.

It may be because Chang'e-4 can stay on the far side of the moon relatively stable, and other places are not stable enough.

Because the far side of the moon is conducive to landing, isn't it, after all, the lunar environment is different.

Because in other places it is not yet very mature landing, there are great unpredictable factors.

Because the far side of the moon is conducive to landing, although there are clouds and sunshine of the moon every day, we and the dinosaurs see the same side of the moon.

Because the destination of the moon was set from the beginning.

Because on the far side of the moon you can see something that we don't normally see.

We can usually understand that the places that are observed are the front, and the back is difficult to observe.

The front side of the moon is very complicated, only the far side of the moon has a relatively flat terrain, which is suitable for landing.