Space "sunny rain" has long been known. What is the principle?

Space? Rain or shine? Early knowledge mainly refers to the forecast of space environment, similar to the weather forecast we listen to and watch every day. The weather forecast on the earth is convenient for us to travel and reminds us to take precautions against bad weather, which plays a key role in our daily life. In space? Weather forecast? More importantly, it plays a very important role in the life safety of astronauts and staff in manned space station.

The principle of weather forecast that we pay attention to every day is very simple, that is, to predict the weather conditions in the next few hours to a few days through satellite pregnancy cloud images. So what is the principle of space environment prediction in space?

The space environment factors that affect the safety of manned spacecraft and space station mainly include atmospheric environment, high-energy radiation environment and meteoroid environment. The first two factors are closely related to a star. Yes, this celestial body is the sun, and it will also be restricted by the activities of the thorns.

Especially when the sun erupts, we don't feel so obvious because of the protection of the atmosphere on the earth, but manned spacecraft in space environment or near-earth environment will have a very obvious impact. Solar burst will affect the atmospheric environment, especially sunspot burst, which will greatly increase the intensity of high-energy radiation, thus greatly affecting the operation of manned space equipment and posing a great threat to the life safety of astronauts. Space environment forecast is to avoid manned spacecraft directly facing the sun explosion.

Meteoroid environment, as its name implies, refers to the situation of extraterrestrial meteorites and whether there will be meteoroids in the orbit of manned spacecraft, so it is necessary to make predictions in advance. This is to avoid the impact of meteoroids, because this kind of high-speed impact is unbearable for manned spacecraft and space stations, but the consequences of being hit are unimaginable.

From the above, you can feel how difficult manned space flight is. We only saw the moment when the rocket was successfully launched and the space station was successfully put into orbit. Then we know little about the efforts of countless people behind us, which bear the sweat and even lives of countless people. I am really proud of our great motherland.