Is liquid water present in space?

No, but there is water in other forms.

Because of gravitation, the gravitational pull on water in space is very small.

Main information:

Space (English: space), which the Chinese dictionary explains is extremely high sky. The International Aviation Federation (IAF) in Geneva, Switzerland, defines the boundary between the atmosphere and space

The dividing line is 100 kilometers (about 62 miles) above sea level, which is called the Kármán line. The Kármán line is named after the American scientist Theodore von Kármán.

Geophysicists divide atmospheric space, or airspace, into 5 layers. troposphere, sea level to 10 km. The troposphere has dense air called a dense atmosphere. The air in the dense atmosphere becomes thinner and thinner as the altitude increases.

Stratosphere, between 10-40 km. mesosphere, 40 80 km. 80-370 km is the thermosphere, which belongs to the lower part of the ionosphere. The outer atmosphere, more than 370 kilometers of space, belongs to the upper part of the ionosphere.

From the Earth's surface to an altitude of 100 kilometers, there is less and less air as the altitude increases. 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.

Water cannot flow in space because of gravity (gravitational force). In space, there is no or almost no gravity, so water can only gather into clumps under the action of intermolecular van der Waals forces and surface tension, and cannot flow. In space, the blood of astronauts can flow because the blood flow in the animal's body is not due to gravity or gravity, but to the pressure (blood pressure) caused by the heartbeat.

With or without gravity, blood pressure is present, so blood can flow. If the blood flow within the blood vessels also relies on gravity, then it is troublesome. When a person stands on the ground, the blood will flow down the limbs, and the head will be in a state of ischemia forever.

Water is the cradle of life on Earth. Like the blood of the earth, water circulates and nourishes all living things. It is the material condition for the survival of all living things.

There are large and small cycles in the water cycle on Earth. Among them, the large cycle refers to the interconversion movement between ocean water and land water through a series of processes. The small cycle also includes two forms: the domestic cycle, the domestic cycle and the land cycle.

In general, the water vapor content in the air at the perigee is also very low, about, affected by the atmosphere and the gravitational field, although there are gas molecules present in more than 1000 kilometers, it is very thin, and there are only about 2 gas molecules per cubic centimeter, water vapor"Run"There are very few cases to space. At the same time, from time to time from outer space, some meteorites, comets, dust, etc. will be attracted by the earth into the atmosphere, thus bringing some water.

Steam accounts for a small proportion of the mass of the atmosphere and is distributed differently at different latitudes. Water vapor in the air comes mainly from the evaporation of water from land and sea and from the transpiration of plants. If we think of the escape layer as its boundary, the entire atmosphere is about 550 kilometers thick, and water vapor is concentrated in the troposphere, within 12 kilometers of the surface.

Above the troposphere, the atmosphere contains less than one percent of the water in the air. Since most of the water vapor is in the lower part of the atmosphere and is in the water cycle, it is difficult to evaporate into space. Although there is a certain probability that water vapor reaches escape velocity at high altitude, the probability is very small.

In general, I don't think water vapor evaporates into space.

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No, when the Earth's water evaporates, it condenses into clouds in the troposphere, and then turns back into rain, forming a water cycle. Clouds don't fly up into the stratosphere, gravity and the atmosphere lock in water vapor, so water doesn't evaporate into space.

No. Because the water on the earth needs to pass through the atmosphere in the process of evaporation, and the atmosphere has been severely radiated by the sun, which has led to a dissociation effect, so the steam will be broken down into hydrogen atoms and oxygen atoms in the process of rising, and then released into outer space, so the water vapor cannot reach.

Absolutely. But there is no need to worry, even so, the water on the earth will remain balanced, and there will be no less and less water.

First of all, our spacecraft is located in the Earth's orbit, and the weightlessness occurs because the spacecraft is running at high speed in the Earth's orbit. The spacecraft is affected by the gravitational pull of the earth, and because the spacecraft is running in the annular orbit of the earth at high speed, the centripetal force generated can cancel out the gravitational force brought by the earth, so the spacecraft can float smoothly in space, and the people and materials in the spacecraft have the same effect. The water droplets are stationary relative to the spaceship, and at the same time, the spacecraft floats smoothly in the Earth's orbit in space at high speed.

Therefore, the water droplets in the spacecraft always remain weightless, and because of the intermolecular forces of the water droplets themselves, the water droplets can maintain a spherical state in the spacecraft. If the spacecraft returns to Earth, the droplets will turn into a small pool of water. Gravitational and intermolecular forces present us with so many amazing phenomena, as long as we understand the mysteries, many magical phenomena will be solved by us one by one.

Space microgravity environment is very interesting, our tears will not flow downward, but will be attached to the corners of our eyes like a bead, wet towel in microgravity environment is very difficult to dry, because the water will not be affected by gravity and has been attached to the surface of the towel, and after relaxing the towel back to the original wet towel state. Therefore, the circular shape of the water droplets in the spacecraft is caused by gravity and intermolecular forces.

All matter on Earth will be subjected to gravity, i.e., attracted to the Earth.

In space, because it is far enough away, the matter in space will not be affected by the earth's gravity, and it can fly with a little thrust. This is the case with water in space.

We know from many reports of life in space that astronauts float in space. So why is this happening?

Most people think that this is because there is no gravity in space, and this view is not true. In fact, this is because people are in a state of weightlessness when they "free fall" in space, and they cannot feel gravity and have the illusion of no gravity, which feels like floating in space. You can imagine the scene of people in the elevator, if the steel cable of the elevator is suddenly broken, then the elevator room and the person in the elevator fall down sharply at the same time, then the person is equivalent to no weight for the elevator, which is the state of weightlessness.

Therefore, people are not floating in space, they just don't feel the presence of gravity.

Yes, the state stove fiberIn space, water resources are very scarce, and it is impossible to send water to the sky every few days for a long-term stay on the space station, so,The regenerative environmental control and life support system used in the space station requires a closed-circuit circulation of wastewater, including urine

Urine contains more than 100 kinds of organic and inorganic substances, of which about 5% of the impurities are mainly urea and sodium chloride.

and various acids. Organic matter in urine, ammonia nitrogen.

and the content of salt is very high, and its main impurity, urea, is an unstable polar nonionic pollutant, which is difficult to treat. Moreover, in the microgravity environment of the space station, it is difficult to carry out the directional flow and separation of liquids without hydrostatic pressure, gravity-driven convection, and sedimentation.

Therefore, urine is the most difficult wastewater to treat in the space station, and the urine treatment technology of the space station is an internationally recognized technical problem and one of the key technologies for the construction of China's space station.

Chinese space station.

The use of the most advanced vapor compression distillation technology, this technology is very difficult, in 2012, aerospace science and industry.

In the past ten years, the team has gone through the engineering prototype, initial sample and normal sample development process of the product, and has successively broken through more than ten key technologies such as low-pressure rotary distillation, gas-liquid two-phase flow transportation and separation, non-lubricated rotary dynamic seal, urine calcium crystallization and precipitation, distillation waste gas treatment, etc., and realized the extraction of "water" from "urine" and filled a number of domestic technology gaps.

Tianhe core module.

The treatment subsystem rotates the pre-treated urine to form distilled water, and the collected water vapor condenses to form distilled water.

Then the distilled water is exported to the water treatment subsystem for deep purification treatment, so as to re-extract and reuse the water in the urine, which can truly realize the recycling of water resources of the space station while reducing the load burden of the cargo spacecraft and greatly reducing the operating costs of the space station.

In a single duty cycle, the urine treatment subsystem is able to extract 5 liters of distilled water from 6 liters of urine, and purified reclaimed water.

It exceeds the national health standards and can fully meet the needs of astronauts who stay in the space station for a long time, such as cleaning and oxygen production.

The space station is equipped with a toilet bowl

The Chinese space station has a sanitary area, equipped with a space exhaust toilet, the space exhaust toilet technology is currently only mastered by China, the United States and Russia, the astronaut sits on the toilet seat with his hips, the toilet lid opens automatically, and then ties the fixed strap around the waist to prevent the body from floating, for insurance, there is also a handle on one side of the toilet.

The stool is sucked away by air through the nozzle. There is a lever under the handle, twisting the lever to adjust the air flow of the nozzle, the toilet lid automatically closes, the inside of the toilet is like a vacuum, the feces dry quickly, and the solid parts are regularly thrown out of the cabin to let it enter the atmosphere.

Medium burned.

We all know that water is the source of our life, without water we human beings will not be able to survive, on the balloon of our human survival, water resources have accounted for more than 70 percent, the earth provides us human beings with sufficient water resources, so water is very important for us human beingsMany people will have this question, what is the state of water in space? In fact, the water word in the sky is a ball or similar to a transparent plastic sphere, let's explain it in detail.

On the earth where we live, because there are many forces on your earth, such as gravity, attraction, pull, floating, etc., plus the earth itself has the effect of gravity, which makes many gravitational objects we usually use break down and fall to the ground, so people say that the earth is a huge magnetic field, which has an attraction effect on everything in the world, but it is completely different in space.

We all know that there is no gravity in space, and there is no floating force, many astronauts will do a lot of experiments and research when they explore the sky, but those phenomena are very rare in our earthlings, and there will be no such phenomenon in our lives, if this phenomenon occurs on the earth, it is a normal phenomenon, water in space because there is no gravity and floating, it will cause water to float around in the air, it will neither fall to the ground, nor go deep into the sky, It's always in mid-air.

And the water in space looks like a sphere, it will not be dispersed, it will always be concentrated together, with the naked eye it looks like the water on the earth is still a certain difference, at this time it is not a liquid, but also a kind of plastic sphere, which looks transparent and gives people a fresh feeling. Although it has a different shape, it is still water, but there is a certain difference in the state in which it is expressed.

Water in space, (excluding spacecraft) will exist in molecular form. Water is weightless in space, with no gravity and no buoyancy. Then his shape is spherical under the influence of surface tension.

Gaseity. Water exists in space in the form of water vapor, just like the atmosphere on the surface of the planet, which is wonderful.

Under weightlessness conditions, water forms a sphere that reaches an equilibrium state of minimum surface area and intermolecular force equilibrium.

Anyone who has studied physics knows that there is microgravity in space. Water entering space creates a state of weightlessness. This will cause water, it will not fall automatically, it will gather in a ball, and the water will float in the air. Appears in a suspended state.

Water is a state of floating in space, because under the action of weightlessness, it can only float in the air and does not fall to the ground.