Temperature in Space

Film directors and science fiction writers constantlytry to prove to us that a man who suddenly got into an open space without a spacesuit will die in a split second. According to them, the temperature in the Cosmos is such that no living thing without special equipment is able to stay in the open space of the universe for more than a second. For example, this is quite interesting and brightly written in one of the works of Arthur C. Clark: the hero, who was in the open Cosmos, instantly dies due to the strongest frost and internal pressure. However, according to theoretical calculations of modern scientists, the death of a person in such conditions does not come at a moment's notice.

It is often suggested thata man who finds himself in the open space of the cosmos will be torn from within by sharply increased pressure. Space is an ideal vacuum, and in the human body, pressure is maintained in approximately one atmosphere. At first glance, it may seem that such a resonance is enough to make a living creature instantly die from an "explosion".

In fact, no "explosion" will occur -body tissues are characterized by sufficient strength and are able to cope with pressure in one atmosphere. Instead of the expected reaction, something quite different happens: the capillaries burst, which supply blood to the skin, this is quite an unpleasant phenomenon, but not at all fatal.

Another reason why a person canvery quickly die in the open space of the universe - the very temperature of the Cosmos, which, according to some data, reaches an absolute zero by Kelvin (-273.15 ° C). More precisely, people think that they do not know anything about the temperature characteristics of interplanetary space. The temperature in the open Cosmos, strange as it may sound, is the absence of any temperature. Outer space, according to researchers, has no temperature, accordingly, it can not neither heat nor cool the living organism in it.

What is traditionally meant by suchwith a term like "temperature"? Firstly, chaotic motion of atoms or molecules, of which absolutely all bodies are composed. The more the molecules move, the correspondingly the higher the thermometer. Where there is no substance as such, there can be no question of such a concept as temperature. Cosmic space is just a place where there is very little matter. Therefore, they say that the temperature in the Cosmos is its complete absence. However, bodies that are in interplanetary space have very different thermal indices, which depend on the set of all possible parameters.

The cosmic space is filled with radiationsources, having the most diverse intensity and frequency. And the temperature in Cosmos, from this point of view, is understood as the total energy of radiation in a certain place of space.

Thermometer in open outer spacefirst will show the temperature that was characteristic of the environment from which it was extracted, for example, from the interior space of the spacecraft. Over time, the device will heat up, and very much. After all, in conditions where convective heat exchange takes place, objects lying in direct sunlight heat up sufficiently strongly, so that they can not be touched. In the Cosmos such heating will be much stronger, since the vacuum is the ideal heat insulator.

Thus, the temperature in the Cosmos is a conceptrelative, however, depending on where the body is at, it can be heated or cooled. Far from the stars, where practically no heat fluxes penetrate, the temperature of such a body will be approximately 2.725 Kelvin, since the relict radiation propagates in all known to the astronomers of the part of the universe, but as the body approaches a star, it will gradually increase.