The sun-a "lazy" star: After comparing the sun with other stars, the research team found that most stars are "diligent" than the sun. Similar to the sun, the brightness change of stars is more than five times that of the sun, and sunspots and stellar flares often occur on other stars. The sun is relatively stable.
Stellar flares produce very powerful radiation clusters, and when they come into contact with the magnetic fields of other planets, they will produce auroras at the poles. Of course, this is a relatively safe situation. If the stellar flare is too strong, it will break through the magnetic field protection. For the earth, strong solar storms may destroy satellites and power grids, and completely paralyze urban power supply systems and communication systems.
The earth benefits from the laziness of the sun: for the earth, active stars will not bring benefits, but will threaten its survival. An active star may completely change the environment of the earth. For a living planet, an active star may be fatal, so the sun is a lazy and boring star, which is a good thing for the earth. The inactivity of the sun gave the earth enough time to evolve life. However, the sun is not always lazy, just like human beings. Through the study of radioactive elements in polar ice cores, scientists found that the sun is not always lazy, just like human beings need to rest after work, so the sun needs to be lazy for a while after being busy. Until now, the "lazy health" of the sun has at least continued. The sun may be activated again in the future: by observing other stars and detecting elements in polar ice cores, scientists are expected to be active again in the future.