What is the question about outer space?

1. Outer space refers to the space area outside the dense atmosphere of the earth, and there is no clear boundary. Outer space is referred to as space dissipation, also known as cosmic space, which refers to the void area outside the atmosphere in the earth's sky, and outer space is usually used to distinguish it from the territorial space (territory); Although it is called void, it is not ethereal, and is generally defined as space about 1,000 kilometers away from the earth's surface.

2. The International Aeronautical Federation defines an altitude of 100 kilometers as the Kármán line, which is the current boundary between the atmosphere and space. The United States identifies people who arrive at or are 80 kilometers above sea level as astronauts, and 120 kilometers is the boundary where air resistance begins to work during the spacecraft's return to Earth.

1. What does outer space refer to: Outer space refers to the space area outside the dense atmosphere of the earth, and there is no clear boundary division. It is generally defined as space approximately 1,000 kilometers above the Earth's surface.

2. Outer space, also known as cosmic space, refers to the empty area outside the atmosphere in the earth's sky, and outer space is usually used to distinguish it from the territorial space (territory); Although it is called emptiness, it is also? Not ethereal. There is no clear boundary between space and the Earth's atmosphere, as the atmosphere gradually thins as the altitude increases.

Assuming that the temperature of the atmosphere is fixed, the air pressure will decrease exponentially from 1000 millibars at sea level to zero as the altitude increases. The Fédération Internationale de l'Aeronautical (IAF) defines the Karman line at an altitude of 100 km (62 mi), which is the current boundary between the atmosphere and space. The United States identifies people who reach an altitude of 50 miles (80 km) as astronauts, and during the atmospheric reentry, 120 km (75 miles or 400,000 feet) is the boundary where air resistance begins to work.

Outer space refers to the area of space outside of the Earth's dense atmosphere.

Outer space, also known as cosmic space, refers to the empty area outside the atmosphere in the earth's sky. There is no clear boundary between space and the Earth's atmosphere, as the atmosphere gradually thins as the altitude increases. Assuming a constant atmospheric temperature, the pressure tunnel abrasive material will decrease from 1000 mbar at sea level to zero as the altitude increases.

The International Aeronautical Federation defines the Karman Line at an altitude of 100 km, which is the current boundary between the atmosphere and space. The United States considers people who reach an altitude of 50 miles to be astronauts, and 75 miles or 400,000 feet in 120 nanometers of fluid is the boundary where air resistance begins to work during the atmospheric reentry.

How to live in outer space

There are many factors to consider when living in space, such as the physical and psychological needs of humans in space, the design and operation of space vehicles, the recycling of air and water, the management of energy, and so on.

1. Space vehicles must be designed to support astronauts' lives, providing sufficient space, maintaining a constant temperature, oxygen and carbon dioxide recycling systems, water recycling systems, food systems, life support systems, and so on.

2. In space, astronauts need to consume a lot of energy and need to have enough food**. In general, food in space is specially processed, such as free-based processed dehydrated food, canned food, special nutrition bars, etc.

3. Living in space requires a very high level of safety, because there are many dangers in space, such as space radiation, tiny meteorites, machine breakdowns, and so on. Therefore, strict safety measures must be implemented, such as regular maintenance and overhaul of space vehicles, maintaining proper distance and speed, and so on.