I Have a Little Black Hole

Everyone here understands why the Infinite Gravity Group has the confidence to allow this behemoth to fly over nearly 80 million kilometers in just 98 days. Such a combination of acceleration and propulsion is better than relying only on inertia or ion thrusters. The aircraft is much faster!

While everyone was still discussing, Jiang Ziyu had brought everyone to the last cabin of the space station that could be made public, she opened the cabin door and smiled: I don't need to say that everyone knows what this place is for. Bar?

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

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

Besides those flowers, the rest are all vegetables. We Chinese people will never give up on growing vegetables anywhere. After all, this is a talent!

Besides, think about it, when we eat hot pot in space, we use fresh vegetables grown by ourselves instead of dehydrated vegetables in vacuum packaging. I think it will be different in terms of taste and other aspects. right?

Think about it, does it feel more at home? And there are 3 floors in total, and the total planting area of ​​vegetables has reached 220 square meters. In the traditional saying of our Chinese people, it is planted on an acre and a third of the land!

The planting area of ​​our cabin exceeds the standard of 200 square meters for a third of the land. This planting area is enough for us to eat all kinds of vegetables when we perform tasks. Look at those watery cabbage and tomatoes. Tonight's Eat them in hot pot!

This module has been launched for 4 months, obviously our AI system and robots are taking good care of them, just so that we can eat ripe vegetables as soon as we come up!

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

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

Seeing this question, Jiang Ziyu smiled, and she said with a smile: Of course it is impossible! Even if we make perfect use of the space of the entire cabin through the multi-layer planting technology, the oxygen provided by all the plants in this cabin, At most, it can only be used for the daily breathing of one of us.

Let me give you a simple science guide! Assuming 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. Plants take in oxygen and release carbon dioxide at night, so ideally the lights in the room would need to be on 24 hours a day so the plants would be producing oxygen all the time, taking into account that plants work differently .

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 only about 5% of the oxygen content is consumed. Consumes 550 liters of pure oxygen.

The amount of oxygen that a mature plant can produce every day is very limited. Take a pot of flower in our laboratory as an example. It has about 40 leaves on average and can produce about 0.8 liters of pure oxygen every day.

If we calculate according to this number, we need about 687 strains in total. For the sake of safety, we will round up to 700.

That is to say, there are at least 700 mature indoor plants in this confined space. They all grow in relatively humid areas. They must have light 24 hours a day, so that it is possible for a person to survive. In perfect conditions, you can even rely on this Breathe for a few years.

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

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 a portion of the carbon dioxide is not absorbed by plants and is not converted into oxygen.

And even if half of the plants in our cabin are grown in hydroponic mode, there will always be some unexpected reactions and cycles that will consume oxygen to dangerous levels, such as plants dying of old age and disease, in this case It is inevitable, and if this situation occurs in a large area, it is conceivable that it is dangerous, right?

You can use the above number to compare the number of plants in our cabin. Although the number of plants here is far more than 700, many vegetables do not have as many as 40 leaves, and the oxygen production capacity of various plants Also not the same.

So if one of us is going to rely on the plants here to breathe, we have to inject oxygen into it, so it can be seen that this cabin is also suitable for us to relax and provide us with fresh vegetables and so on. Important feature!

And although we carry a lot of oxygen, and we can also obtain more oxygen by electrolyzing water, we usually use more than this oxygen, we also have another cabin dedicated to making natural oxygen.

Seeing that everyone was curious about this question, Jiang Ziyu said with a smile: Let's go, since you are so curious, then I will take you to the oxygen preparation laboratory to have a look!

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

Cyanobacteria are almost everywhere on the earth. Their existence has made the earth what it is now, so their oxygen-producing ability is unquestionable.

All biological reactions will form carbon-carbon bonds, using carbon dioxide as a raw material and using sunlight to provide energy to react, which is photosynthesis. Cyanobacteria have been living on Earth in this way for over 3 billion years.

Its development makes the whole earth's atmosphere develop from anaerobic state to aerobic state, thus giving birth to the evolution and development of all aerobic organisms.

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