I have a little black hole

Seeing that everyone here understands why the Infinite Gravity Group has the confidence to fly this giant beast over 80 million kilometers in just 98 days. Such a combination of accelerated propulsion methods is better than relying on inertia or ion propulsion. Aircraft is much faster!

While everyone was still talking, Jiang Ziyu had taken you to the last cabin that the space station could make public. She opened the cabin door and smiled, "I don't think I need to say here that everyone knows what it is for." Right?

Yes, here is our space oxygen for a long time in the future. Every day we have a fixed time to absorb natural oxygen here. Although our air circulation system is very powerful, of course, synthetic air does not have this natural energy. More comfortable!

And it can also play a role in relaxing the nerves. If we can't see any green plants during the entire task cycle, even those of us who have been rigorously trained and have very good psychological qualities will be easily anxious and emotionally easy Out of control.

In addition to the flowers here, the rest are all vegetables. Anyway, the Chinese growers will never give up anywhere, after all, this is a gift!

Let’s think about it. When we eat hot pot in space, it’s the fresh vegetables that we grow ourselves, not the dehydrated vegetables in vacuum packaging. I think it will be different from the taste or other aspects. Right?

Think about it, is it more like home?And there are a total of 3 floors, and the total area of ​​planted vegetables has reached 220 square meters. In the traditional saying of our Huaxia people, it is planted on one acre and three points!

The planting area of ​​our cabin has exceeded the standard of 200 square meters in three points. This planting area is enough for us to eat all kinds of vegetables frequently when performing our tasks. Look at the watery cabbages and tomatoes, tonight. Eat them with hot pot!

It has been 4 months since this cabin was launched. Obviously, our artificial intelligence system and robot take good care of them, just let us eat mature vegetables as soon as we come up!

Of course, this cabin is also an experiment to explore the self-sustainability of the future spacecraft for long-distance navigation, not just for us to eat fresh vegetables!"

"Then this cabin can also provide enough space for your astronauts?" A highlighted question was projected. Obviously, there were many people asking this question, so the system automatically screened a message that was asked first.

Seeing this problem, Jiang Ziyu smiled, she said with a smile: "This is certainly impossible! Even if we use the multi-layer planting technology to make perfect use of the entire cabin space, the oxygen provided by all the plants in this cabin, At most, it can only provide one of our daily breathing.

Let me make a simple science for everyone!Suppose in a perfect situation, how many plants does a person need to survive in a confined space?

We know that most temperate plants only produce oxygen during the day.At night, plants absorb oxygen and release carbon dioxide, so in an ideal situation, the lights in the room need to be on 24 hours a day, so that the plants will always produce oxygen, of course, this also needs to take into account the different ways in which plants work .

On average, we humans need to breathe about 7-8 liters of air per minute. In a day, we need about 10,000 to 11,000 liters of air, but this will only consume 5% of the oxygen content. Consumption of 550 liters of pure oxygen.

Generally, the amount of oxygen a mature plant can produce per day is very limited. Take a potted plant in our laboratory, for example, it has an average of about 40 leaves, which can produce about 0.8 liters of pure oxygen per day.

If calculated according to this number, the total number of calculations required is about 687. For safety, we will round it to 700.

In other words, there are at least 700 mature indoor plants in this confined space. They are all grown in relatively humid areas. They must be illuminated 24 hours a day, so that it is possible for a person to live. Breathe for a few years.

But in a longer time frame, you must start worrying about other changes in the room.

The bacteria in the soil absorb oxygen to produce carbon dioxide, which in turn combines with the soil and reacts with the concrete foundation to produce calcium carbonate and water.This means that part of the carbon dioxide is not absorbed by the plant and is not converted into oxygen.

And even if half of the plants in our cabin are planted in hydroponic mode, there will always be some unexpected reactions and cycles that will consume oxygen to dangerous levels, such as plants will die and die, this situation It is inevitable, and if this situation occurs on a large scale, can we imagine its danger?

You can use the above figure to compare the number of plants in our cabin. Although the number of plants here is far more than 700, many vegetables have less than 40 leaves, and the oxygen production capacity of various plants. It is also different.

So if one of us depends on the plants here to breathe, we will have to inject oxygen into it. This shows that this cabin is also suitable for us to relax and provide us with fresh vegetables. These are also the same Important features!

And although we carry a lot of oxygen, and we can also get more oxygen through electrolyzed water, but we usually use more than these oxygen, we also have another cabin dedicated to the production of natural oxygen."

Seeing everyone's curiosity about this question, Jiang Ziyu smiled: "Come on, see your curiosity is so heavy, then I will take you to the oxygen preparation experiment cabin to take a look!"

After opening the closed door of the next cabin, she smiled and introduced to the camera: "Are you shocked by the dense green glass jars inside? This is our oxygen preparation laboratory. The green oil in these glass jars All are cyanobacteria.

Cyanobacteria are everywhere on the earth. Their existence makes the earth look like it is now, so their oxygen production capacity is beyond doubt.

Biological reactions all form carbon-carbon bonds, using carbon dioxide as a raw material, and using sunlight to supply energy to react. This is photosynthesis.In this way, cyanobacteria have lived on the earth for more than 3 billion years.

Its development has caused the entire atmosphere of the earth to develop from an anaerobic state to an aerobic state, thus giving birth to the evolution and development of all aerobic organisms."