What is it like to leave Earth and fly into space?

It may be like in "The Martian", on the vast Martian plain. God sits on the circle of the earth, and the inhabitants of the earth are like locusts. He spreads out the firmament like a curtain, and the heavens like a tent to live in.

Envy. Do astronauts usually enjoy the scenery of the Earth? Of course, it's a great place to see the lights of the Mississippi, the Northern Lights, and the traffic jam in New York.

Watch the astronauts in space in the live broadcast! When eating, you have to give a glass of orange juice freely, and the orange juice floats in the air in a round, just like an egg, and there is a coca-cola in the form of a braised egg.

This is captured by the International Space Station, when the spacecraft leaves Earth. From God's point of view, humanity has worked hard. <>

Then I don't know very well, after all, not everyone can go up to space, so there is no way to help you solve this problem, space is through some large tools, and then people with very good physical intelligence, we can only go to space after screening, we can imagine that the earth belongs to a planet with more green plants, and there are many people of different skin colors. Consider the words of one astronaut: "I feel more connected to everything in the universe than I have ever been, and I often feel isolated from the universe when I am on Earth."

I feel like I have the same right to exist in space or the universe as any particle in a star cluster. I'm as eternal as it is! ”‍

Even after practicing underwater thousands of times, it's still not the same. There are so many things in space life that you can't think of living on Earth, such as sunrise and sunset, which happens every 45 minutes, so there are many opportunities to think about life.

What kind of training did our previous generations of astronauts receive? It's all kinds of training! Swamp Survival Training, Survival Under Trees Training, Jungle Rescue Training, ......Are there any of these environments in space?

No, it's because when our technology returns and lands, it may fall on the **.

Instead of sleeping in a sleeping bag, the astronauts sleep in a bed of drawers, and there will be a person on duty outside, who is responsible for opening the drawers of the sleeping people and pulling them out!

I'm also curious. Walking in the space station is generally like Superman, or is it floating on your stomach, so that you don't hit your head up and down, hey?

Those professionally trained astronauts don't know that if you put it on me, you will get airsick. Anyway, will I be the first passenger to throw up on the space shuttle?

It can probe more powerful substances.

After the manned spacecraft flew into space, it used the return capsule to return to Earth.

During the take-off phase and the re-entry phase, the astronauts are half-lying on the seats in the capsule and have a certain angle to overcome the pressure of the overweight. In front of the seat is the instrument panel to monitor the flight conditions; A posture control handle is installed on the seat in case the self-control fails, and the adjustment can be made by hand.

The self-control failure of the US Mercury spacecraft when it returned to the ground was caused by the astronauts' manual control. Before the spacecraft returned to the ground, the orbital module and the service module were separated from the re-entry capsule and incinerated during re-entry, and only the re-entry module carried the astronauts back to the ground.

Features of manned spacecraft

Manned spacecraft can carry out space activities independently, can also serve as a "ferry" between the ground and the space station, and can also dock with the space station or other spacecraft for joint flight. Manned spacecraft are small in size, limited by the amount of consumables they carry, do not have the ability to resupply, and cannot be reused.

Manned spacecraft, also known as manned spacecraft, is launched into space with the help of carrier rockets, orbiting the earth or carrying out orbital maneuvering; There is an artificial environment suitable for people to work and live in the spaceship; After completing the mission, part of the spacecraft returned to the atmosphere, where a soft landing was achieved with parachutes and buffers.

It is understood that the on-board engine of the re-entry capsule provides reverse thrust to let the re-entry capsule leave the orbital module, and the earth's gravity accelerates it to land towards the earth's surface, and when it reaches the dense area of the atmosphere, it opens the parachute to slow down and land safely on the ground.

The return capsule, also known as the cockpit, is for astronauts"Cab"。It is a closed structure with a hatch at the front end. After the re-entry module and the propulsion module are separated, the re-entry module returns, the propulsion module burns up, and the orbital module is equivalent to an earth observation satellite or space laboratory, which will remain in orbit for a period of time.

Generally, manned spacecraft can be divided into three parts: propulsion module, orbital module and return module.

The propulsion module, also known as the instrument module, is usually equipped with a propulsion system, power supply, orbital braking, and provides oxygen and water to the astronauts. The propulsion module is also flanked by a main solar wing with an area of more than 20 square meters.

The orbital module is the main activity area of astronauts, except for the return capsule when lifting off and returning, the astronauts are in the orbital module at other times, and the orbital module integrates many functions such as work, eating, sleeping and washing.

The re-entry capsule, also known as the cockpit, is the "cockpit" of the astronaut. It is a closed structure with a hatch at the front end.

After the re-entry module and the propulsion module are separated, the re-entry module returns, the propulsion module burns up, and the orbital module is equivalent to an earth observation satellite or space laboratory, which will remain in orbit for a period of time.

Because people can use spaceships to leave the earth and reach space.

The spacecraft can only fly into space by overcoming the gravitational pull of the earth by the powerful thrust of the rocket.

After the spacecraft goes into space, the gravitational force it receives is exactly equal to the centrifugal force of the spacecraft around the center of the earth, so even if the engine is not working, the spacecraft can still fly in space without falling, but it does not mean that the acceleration of the spacecraft is zero, but that this acceleration is exactly equal to the acceleration of the spacecraft that can move in a circular motion In addition, in the absence of air, there is a special oxidizer and fuel on the spacecraft, and the engines of the spacecraft can still ignite and work, There are also ships that use other types of thrusters, such as low-thrust electric propulsion. With the rapid development of science and technology, people are exploring outer space faster and faster, and with the manufacture of high-thrust rockets, people can explore a wider space in the universe.

More than 100 kilometers away from the earth is space.

Space, as explained in the Chinese dictionary, is extremely high in the sky. The International Air Federation in Geneva, Switzerland, defines the boundary between the atmosphere and space: the boundary between space at an altitude of 100 kilometers above the Earth's sea level, known as the Kármán line.

About 75% of the atmosphere above the Earth is in the troposphere and 97% below the stratosphere. The density of air in the thermosphere is 1% of the Earth's surface, and air continues to exist at an altitude of 10,000 kilometers in outer space, and there are still air particles at an altitude of 100,000 kilometers. Therefore, there is no clear boundary between airspace and outer space.

Because people are in a state of weightlessness in space, when the human body loses the effect of the gravitational field, the human body cannot be fixed, and the phenomenon of floating everywhere appears.

1. The object is in the gravitational field.

A state in which there is mass in free motion without exhibiting weight or small weight, also known as zero gravity. Weightlessness is sometimes referred to in terms of zero-gravity and microgravity environments. Exactly, when acceleration.

It is weightless when it is vertically downward.

2. In the weightless state, people can float in the air, and they don't need to lift bulky objects without a lot of effort, which is really "easy". Astronauts want to sleep, lie down and stand, there is no different feeling. In fact, astronauts slept in sleeping bags attached to bulkheads, like insect cocoons hanging from tree branches.

3. The situation of astronauts in weightlessness in the universe and people who can't play in water fall into deep water and atmosphere.

The situation is basically the same for floating matter. The reason for this is that astronauts in space will be weightless in space instead of falling under the conditions that allow the bearing capacity of space materials such as pure gas, which have not yet been detected.

People will encounter various dangers when they leave the earth to go to space, so let's talk about several common dangers. Clause.

1. In space, suffocation due to the absence of oxygen. Clause.

Second, after going to space, because the spaceship lost control, people were forever floating in space and finally starved to death. Third, there are many rays in space, and people may be shot through the body by some rays in the universe in space, causing people to slowly suffer and die. Clause.

4. Humanity was torn to pieces by black holes in the universe. Fifth, it is very cold in space, so astronauts are easily exposed to space, resulting in being frozen to death.

First, in space, death by suffocation due to the absence of oxygen. We know that if human beings want to be able to live, they must have oxygen to provide to the human body, and when people leave the earth and go to space, because there is too little oxygen in the air, when we run out of oxygen cylinders, we will suffocate to death.

Second, after going to space, because the spaceship lost control, people were forever floating in space and finally starved to death. When we go to space, the spacecraft is empty, and we can't return to Earth to replenish food, in which case we'll end up starving.

Third, there are many rays in space, and people may be shot through the body by some rays in the universe in space, causing people to slowly suffer and die. There are all kinds of dangers in space, and many celestial bodies will also emit rays that are harmful to the human body, and when humans are unfortunately shot, the body's skills will slowly decay, and finally die in pain.

Fourth, humanity is torn to pieces by black holes in the universe or turned into "Northwest Ramen". When human beings go to space, they unfortunately encounter a black hole, and they will be swallowed by the black hole and affected by the gravitational force in the black hole, and will either be torn to pieces or turned into northwest ramen.

Fifth, it is very cold in space, so astronauts are easily exposed to space, resulting in being frozen to death. It's very cold in space, and if there's not enough to keep warm, it's easy for humans to get frozen into popsicles.

What dangers would humanity encounter in space if it left Earth? These points should not be overlooked!

When people leave Earth and go into space, they may encounter the risk of being infected with extraterrestrial viruses and bacteria, and secondly, they will encounter the danger of wandering black holes, which will be swallowed by terrible black holes.

Without gravity in space, humans experience weightlessness; There is no oxygen in space, and if there is not enough oxygen**, humans will suffocate; You may also encounter aliens and be bullied by them.

If you go to space, you may die without oxygen and lack of oxygen, or you may die because you encounter aliens. It can also be sucked into a black hole, which can also lead to death.

There are more than 20 dangers in space, such as being swallowed by a black hole, starving to death, being burned alive, freezing to death, being shot alive by radiation, and so on.

When people leave the earth and go to space, they may encounter the danger of space junk hitting them, they may lose their breath and die due to oxygen leakage, they may be hit by planets, or they may lose their gravitational attraction and float forever in space.

First: Death due to lack of oxygen. Second: After going to space, due to the loss of control of the spaceship, people floated forever in space, and finally starved to death.

Gravity uses its human-like force to hold us firmly to the ground, so that we can neither jump three meters high, nor be firmly pressed to the ground and unable to walk, so how far away can we float from the earth?

According to relevant researchers and researchers, we can achieve a state of gravity when we reach the first orbit of the Earth's outer space, but this does not mean that we are completely free from the gravitational pull of the Earth.

In fact, even geosynchronous satellites located 36,000 kilometers away from the Earth are affected by the Earth's gravity. However, it only makes the gravitational force a little smaller, but that doesn't mean it becomes zero. In fact, if human beings want to achieve a weightless state, there is also a way.

The effect of the earth's gravity on people decreases as the distance between them and the earth increases, so that people feel like they are floating. But in fact, gravity will only approach zero infinitely, and will not be equal to zero.

Why is it floating on a spaceship.

When the astronaut is in the spaceship orbiting the earth, the spaceship itself is accelerating towards the center of the earth, according to physical inertia, at this time Yun or Chang people will be subjected to an inertial force, its size is exactly equal to gravity, and contrary to gravity, because the inertial force cancels out gravity, its net force is zero, which is equivalent to a state of no force when a person, then the person will float. Come.