What is the temperature in space?

The temperature in space is -270.3°C.

The cosmic space beyond the earth’s atmosphere, the entire space beyond the atmospheric space. Physicists divide the atmosphere into five layers: the troposphere (from sea level to 10 kilometers), the stratosphere (10 to 40 kilometers), the mesosphere (40 to 80 kilometers), and the thermosphere (ionized layer, 80 to 370 kilometers). kilometers) and the outer atmosphere (ionosphere, above 370 kilometers).

About 3/4 of the atmosphere above the earth is in the troposphere, and 97% is below the stratosphere. The outer edge of the stratosphere is the highest limit for aircraft to rely on air support for flight. Some high-altitude rockets can penetrate the mesosphere. The lowest orbit of an artificial satellite is within the thermosphere, and its air density is 1% of that on the Earth's surface.

Air continues to exist at an altitude of 16,000 kilometers, and there are still air particles even at an altitude of 100,000 kilometers. From a strict scientific point of view, there is no clear boundary between air space and outer space, but they gradually merge.

The Scientific and Technical Subcommittee of the United Nations Committee on the Peaceful Uses of Outer Space pointed out that it is currently impossible to propose precise and lasting scientific standards to delineate the boundaries of outer space and air space. In recent years, there has been a tendency to use the lowest altitude (100 to 110 kilometers) of artificial satellites above the ground as the lowest limit of outer space. Extended information

Scientific Exploration of Space

1. Space Station

Space station is also called "space station", "orbital station" or "space station". It is a manned spacecraft that can allow multiple astronauts to cruise, work and live for a long time.

During the operation of the space station, the replacement of astronauts and the replenishment of supplies and equipment can be transported by manned spacecraft or space shuttles, and supplies and equipment can also be transported by unmanned spacecraft.

In 1971, the Soviet Union launched the world's first space station, "Salyut" 1, and then in 1983 it launched "Salyut" 2-7. In 1986, the Soviet Union launched a larger space station, Mir. In 1973, the United States used the remaining materials from the "Apollo" moon landing program to launch the "Skylab" space station.

2. Space tourism

Space tourism is based on people’s ideal of traveling in space. Traveling to space provides people with an unprecedented experience. The most novel and exciting thing is You can enjoy the beautiful scenery of space and enjoy the taste of weightlessness.

These two experiences can only be enjoyed in space. It can be said that this scene can only be found in the sky. The space tourism project began on April 30, 2001. The first space tourist was American businessman Dennis Tito, the second was South African billionaire Mark Shuttleworth, and the third was American Gregory Olson. Nie Haisheng is one of them.

3. Space walking

Space walking (Walking in space) is also called extravehicular activity, that is, astronauts outside the manned spacecraft or on other celestial bodies such as the moon and planets the process of completing various tasks.

It is a key technology for manned spaceflight and an important means for manned spaceflight projects to install large equipment in orbit, conduct scientific experiments, launch satellites, and inspect and repair spacecraft. To achieve the goal of space walking, a lot of special technical support is required.

Baidu Encyclopedia-Space