It is considered that in space there is nothing but vacuum, cold and endless emptiness of the distant galaxies. However, it is not so. Of course, space is not full of life, but there is quite a few interesting processes. The same cosmic radiation causes a lot of interesting processes. And for example, did you know that in space there is pressure? Moreover, scientists can even measure, and this is already long enough. Only here some time ago the pressure on the border of our Solar system began to grow. But how is this possible?
Where in space does the pressure?
This is a pretty good question, because if we remember the physics course, on our planet the atmospheric pressure is created by air molecules and other particles attracted by gravity. Not the last role in formation pressure is the presence of the atmosphere and at what height from the surface we measure it. The higher — the smaller it looks. In space, as you know, almost none of it. So the pressure there is formed a little differently. And you were aware of the fact that in space there is pressure? Write about it in our chat in Telegram.
This is interesting: Why is Venus and mercury has no natural satellites?
In General, the “space pressure” is generated by ions, electrons and other elementary particles. These particles are heated and accelerated by the Sun creates the heliosphere. The heliosphere is, to put it in simple words, a giant ball, which “suspended” particles tend from the centre 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 a place where the end of magnetic influence of the Sun. There and creates the pressure difference. And it can be measured. Using the data obtained with the spacecraft NASA Voyager 1 and Voyager 2, scientists have calculated the total pressure of particles in the outer region of the Solar system.
After analyzing the data, known from previous studies, we found that the new value of the pressure at the boundary of the Solar system is much more than what it was before, said Jamie Rankin, the lead author of the new research, an astrophysicist at Princeton University in new Jersey. This suggests that there are some changes in our Solar system, which we do not know. And this requires further study. To fix this event was really unique time, because we saw him just after Voyager 1 crossed the edge of the Solar system.
It is known that the heliosphere is located at a distance of nearly 9 billion miles (about 14.5 billion kilometers) from the center of the Solar system. Therefore, the research in this area is quite difficult. The study of pressure and velocity in this region on the border of the Solar system, according to scientists, can help us understand how the Sun affects interstellar space. It not only informs us about our own Solar system, but also about the dynamics and evolution of other stars and planetary systems.