Why is there no wind in the universe? What about the solar wind? (It is the one that blows the tail of wisdom and makes the tail of wisdom deflect)

There is gas in the universe, but the solar wind is not a gas

Solar wind

In 1850, when a British astronomer named Carrington was observing sunspots, A small flash of light was discovered on the surface of the sun, which lasted for about 5 minutes. Carrington thought he happened to see a large meteorite fall on the sun.

In the 1920s, due to the availability of more sophisticated instruments for studying the sun. People find that this "sunlight" is a common thing, and its appearance is often related to sunspots. For example, in 1899, the American astronomer Hall invented a "solar spectrograph" that could be used to observe a certain wavelength of light emitted by the sun. In this way, people can take photos of the sun by relying on the light of hydrogen, calcium, etc. that glow in the sun's atmosphere. It turned out that the sun's flash had nothing to do with any meteorite. It was just a brief explosion of hot hydrogen.

Small flashes are very common. In areas with dense sunspots, they can be observed up to a hundred times a day, especially when the sunspots are "growing". Huge flashes like the one Carrington saw are rare, occurring only a handful of times a year.

Sometimes, the flash occurs right in the center of the sun's surface, so that it bursts in the direction of the Earth. After such an outburst, strange things will happen again and again on Earth. The aurora can be intense for several days and can sometimes be seen even in temperate areas. Compass needles can also become restless and swing wildly, so this effect is sometimes called a "magnetic storm." With the advancement of science and technology, the mystery of the aurora is becoming more and more known to us. It turns out that this beautiful scenery is a work performed by the cooperation between the sun and the atmosphere. Among the forms of energy created by the sun, such as light and heat, is an energy called the "solar wind." The solar wind, a stream of charged particles ejected from the sun, is a powerful stream of charged subatomic particles that can cover the Earth. The solar wind flows around the Earth and hits the Earth's magnetic field at a speed of approximately 400 kilometers per second. The earth's magnetic field is shaped like a funnel, with its tips facing the earth's north and south magnetic poles. Therefore, the charged particles emitted by the sun settle along the "funnel" of the earth's magnetic field and enter the earth's polar regions. The upper atmosphere at the poles emits light after being bombarded by the solar wind, forming auroras. What forms in the Antarctic region is called the Aurora Australis. What forms in the Arctic region is called the Northern Lights.

Before this century, this kind of situation had no impact on humans. However, by the 20th century, it was discovered that magnetic storms can affect radio reception and various electronic devices can also be affected. As humans become more and more dependent on these devices, magnetic storms become more and more important. For example, during a geomagnetic storm, radio and television transmissions are disrupted and radar cannot work.

Astronomers studied the Sun's flashes more closely and found that hot hydrogen was apparently flung far away in these bursts, some of which would overcome the Sun's massive gravity and shoot into space. The nucleus of hydrogen is a proton, so there is a cloud of protons (and a small number of complex nuclei) surrounding the sun. In 1958, American physicist Parker called this outward proton cloud the "solar wind."

When the protons coming toward the Earth arrive at the Earth, most of them will be pushed away by the Earth's own magnetic field. However, some will still enter the atmosphere, causing auroras and various electrical phenomena. A huge explosion of a powerful proton cloud shooting towards the Earth will produce a phenomenon called a "solar storm". At this time, the magnetic storm effect will appear.

It is the solar wind that creates the tail of comets. When a comet approaches the sun, the dust and gas surrounding the star will be blown behind by the solar wind. This effect has also been confirmed on satellites. A satellite as large and light as Echo 1 would be blown significantly out of its calculated orbit by the solar wind.