If you ask: What is the earliest celestial body recognized by human beings? The answer should be: the sun. As long as it is daytime and sunny, everyone can see the sun if they look up; if they don’t look up, they can also see the sun (it’s lovely in winter, but frightening in summer).Although humans have experienced tens of thousands of years of changes until now, they still know very little about the sun. Yes, human beings know very little about the sun - some known information about the sun can be found in general reference books. If readers are interested in knowing, they can find out by themselves.Look!The consistent method of narrating the story, even in the opening remarks like the prologue, try to be as interesting as possible, and do not list boring information.As for the saying that more scientific data can be regarded as "sci-fi", it is naturally ridiculous.

It seems very inappropriate, for the earth, the sun is the mother of all life - without the sun, any life would be extinct, and it would be impossible to survive in an environment like the earth. Naturally, it can also be reversed to say that it is because of the sun that there is the environment of the earth and life.Then, once the sun is gone, life on earth will naturally end together. Some people think that there is life on the earth in the universe because of the special environment of the earth, so they work hard to find planets with similar environment to the earth among billions of stars, in order to find life—this kind of Naturally, there are great limitations in thinking about it, and it never occurred to me that the environment of the earth produces only the creatures on the earth, and the environment of other planets produces the creatures of other planets!

The sun is the mother of life on the earth, but people on the earth do not have enough research on the sun. Even the most common phenomenon of "sunspots" cannot be explained. This is really inappropriate. Ordinary people naturally know even less about the sun.For example, ask: What is a "false sun"?There are probably not many people who can immediately answer that it is an astronomical term, so it is necessary to copy the information-of course, a fake sun can also be a fake sun! False sun is an astronomical term: the speed of the sun on the ecliptic is not uniform, so the length of each day is different in a year, which is related to the fact that the ecliptic and the celestial equator are not on the same plane.Therefore, in astronomy, in order to facilitate the calculation of time and make up for this shortcoming, it is assumed that there is a celestial body running on the ecliptic at a constant speed—this celestial body is moving from west to east at a uniform speed on the celestial equator. This speed is equal to The average speed of the sun across the ecliptic and through the equinoxes.This hypothetical celestial body is called a "false sun", or "flat sun".

It's hard to understand and boring, isn't it?Of course, listening to stories is much more interesting!