Space

At the border of the solar system, pressure began to rise

It is generally accepted that in space there is nothing butvacuum, cold and infinite emptiness of distant, distant galaxies. However, this is not quite true. Of course, life does not boil in space, but quite a few interesting processes are taking place there. The same cosmic radiation causes a lot of interesting processes. But for example, did you know that there is also pressure in space? Moreover, scientists can even measure it, which they have been doing for quite some time. Only some time ago, the pressure on the border of our solar system began to increase. But how is this possible?

"Cosmic pressure" began to grow. But why?

Where does pressure come from in space?

This is a pretty good question, because if weremember the course of physics, then on our planet atmospheric pressure is created by air molecules and other particles attracted by gravity. Not the least role in the formation of pressure is played by the presence of the atmosphere and by what height we measure it from the surface. The higher it is, the smaller it is. In space, as you know, almost none of this exists. Therefore, pressure is formed there in a slightly different way. Have you been aware that there is pressure in space? Write about it in our chat in Telegram.

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In general, “cosmic pressure” is created by ions,electrons and other elementary particles. These particles, heated and accelerated by the sun, create the heliosphere. The heliosphere is, in simple words, a giant ball in which the "suspended" particles tend from the center to the periphery. The edge of this region, where the influence of the Sun is overcome by the pressure of particles of other stars and interstellar space, is the place where the magnetic influence of the Sun ends. There, a pressure difference is created. And it can be measured. Using data obtained from NASA's Voyager 1 and Voyager 2 spacecraft, scientists calculated the total particle pressure in the outer region of the solar system.

Having analyzed the data known from previousof research, we found that the new value of pressure at the border of the solar system is much larger than what it was before, ”said Jamie Rankin, lead author of the new study, astrophysicist at Princeton University in New Jersey. This suggests that there are some changes in our solar system that we do not know about. And this requires further study. It was a truly unique time to record this event, because we saw it right after Voyager 1 crossed the edge of the solar system.

Schematic representation of how the Voyagers measured

The heliosphere is known to be at a distancealmost 9 billion miles (and this is about 14.5 billion kilometers) from the center of the solar system. Therefore, the study of this area is quite difficult. The study of the pressure and speed of sound in this area at the boundary of the solar system, according to scientists, can help us understand how the sun affects interstellar space. This not only informs us about our own solar system, but also about the dynamics and development of other stars and planetary systems.