Teacher, I am very interested in astronomy and want to take part in the astronomy competition.

Let's talk about things first, starting with the doubts of the landlord.

Astronomical Olympic Games does not involve difficult knowledge and theory, but focuses on the accumulation of interest and peace. If you want to take part in this competition, you need two foundations. One is the knowledge of mathematics and physics. In mathematics, trigonometric functions are the main ones. In physics, you need to be familiar with gravity and circular motion. Related courses must not be ignored, but should be improved. Of course, the first prize in physics competition is definitely beyond the reach of astronomical olympiad. You can't use astronomical knowledge to turn a topic into a topic of elementary mathematics and physics. Nature can only look at the ocean and sigh. We should have a comprehensive understanding of astronomical knowledge. It is recommended to read more comprehensive popular science books. At first, I was introduced to the Astronomical Enthusiast Handbook. Of course, there are many other good books. For example, A New Introduction to Astronomy. Don't listen to people's bluffing, just sum up the brief history of time and the universe. Astronomical Olympics focuses on general astronomy, rather than abstruse cosmic theory, which is not something that senior high school students in Kan Kan can talk about. One book is enough, but please read it carefully.

As one of the six basic natural sciences, astronomy is naturally a subject that pays equal attention to observation and practice. If you are interested in going deep into this aspect, you should also put a lot of energy into the starry sky. Imagine the other extreme. People who call themselves amateurs can't point out the stars in the sky as a result. I'm afraid they have no confidence in themselves. As for how to pass the time, it is very simple and romantic, that is, walking in the community every sunny night and meeting friends in the sky. It's easier said than done. It is not enough to watch in the cold wind, insist on changing stars and have subconscious interest. If we can persist in a reincarnation, we will not only gain the familiar starry sky, the movement of celestial bodies, the understanding of coordinate system, but also some spiritual enjoyment that is difficult to experience in the secular world. Of course, we also need some tools, such as the active star map at the beginning, followed by the all-sky star map. Stellarium is also worth recommending.

Of course, hobbies need to have a phased goal, and astronomical olympiad is a good choice. Although the practicality is very weak, it is an exam after all. Being familiar with the questions of the past years can be more targeted, and it will also give you a bottom. What I recommend is the supplement of Astronomical Enthusiast magazine for the 2009 Olympic Games, which contains questions about the preliminary, semi-final and international competitions of the astronomical Olympic Games over the years.

Well, the content of the law is probably the above, and the latter is purely my personal play.

About that part of the sky, use one word to describe it: meaningless; ; You're welcome: idiot What did you say?/Sorry? For those who care about astronomical phenomena, the observed astronomical phenomena have already been integrated into their memories, and there is no need to remember them at all. In the absence of astronomical phenomena, we can also expand the accumulation of astronomical records and deduce a general reason. To some extent, it is similar to reciting current affairs and politics before the independent entrance examination in high school, not to mention how effective it can be to cram temporarily. For higher-level professors, you can see the geometry of basic skills in three sentences. Although it seems meaningless now, how many students will do such boring things, once, now and in the future? The list of celestial phenomena can be searched online every year, but I suggest you think twice. Although you have to prepare for the exam, it is enough to recite the current events of Astronomy Enthusiast magazine in recent months, such as which spacecraft China has launched and what international breakthroughs have been made.

Finally, say some metaphysical questions. First of all, please make it clear that astronomy hobby is only your interest and cannot be a reason to interfere with your work (study) or even escape from reality. If you spend too much time on hobbies and neglect your daily study, it is bound to be a waste of time. Again, when you look up at the starry sky, please think about why you are so eager for it. Why did you fall in love with it? Don't be attracted by its charm, hope to gain something from it. I don't expect to give a good answer in high school, but please think about these questions when facing the deep and quiet starry sky. Once you have a strong enough answer, the infinite scenery will reach the peak of danger.