How to choose a star suitable for life?

The bigger the star, the safer it is? The bigger the earth is, the less likely it is to be moody. Even though the earth is far away, it can receive enough light and heat. Beautiful, isn't it? The longer a star lives, the shorter it will be.

Unlike life experiences, stars are not kerosene lamps; The more oil, the longer it lasts. The bigger the star, the stronger the nuclear fusion and the faster the fuel consumption. Just like proxima centauri Centauri's mass is only 1/8 and its brightness is only 0. 1% of the sun's, arcturus's mass is twice that of the sun and its brightness is 2 15 times that of the sun.

The brightness of stars increases explosively with the increase of mass. R 136a 1 is 230 times the mass of the sun, and its brightness is about 8.7 million times that of the sun! As we all know, the higher the wave, the faster the death. The life of the sun is about 654.38+00 billion years, and it has burned for 4.8 billion years. The life span of these super bright stars is only a few million years, even less than one million years. This is a joke about the evolution of life. You know, Beijingers have lived in this land for more than one million years. About 6 million years ago, chimpanzees parted ways with our species. The earliest dinosaurs appeared 245 million years ago. Life in the early Yuan Dynasty may have appeared about 1 billion years after the birth of the earth, that is, 3.5 billion years ago.

Therefore, a stable, long-lived and not too dark star is very important for life. After calculation, scientists found that the optimal size is similar to the sun, which is short in life and fatal in one hour. Our sun is really a precious star.