400 words about the Astronomical Museum.

After dinner this afternoon, I packed my schoolbag and prepared to go to practice activities. I went to the Beijing Planetarium this time. On my way there, I saw many buildings that I had never seen before. There are many tall buildings with round roofs on both sides of the road. Right, right! I also saw my father's unit "Hong Kong and Macao Center Hotel"!

How time flies! In a blink of an eye, the planetarium arrived. We lined up in two lines and walked forward one by one. When I walked in, I saw many things in space. There are five planets of gold, wood, water, fire and earth, and pictures of the Milky Way, which are very beautiful. And the birth of the Milky Way.

There are many interesting and informative things there. One of them is my favorite. This is an arched building. There is a small staircase at the middle entrance, from which you can enter the pipeline. There are two large screens on both sides of the tube, which are filled with planets in space. They are very beautiful. We also watched a 4D movie about constellations. I went to the 4D cinema. It is a spherical roof as round as the earth. After we set out, we saw many small stars in the universe. After a while, many constellations appeared on the screen: Andromeda, Cassiopeia, Cepheus, Taurus and Gemini. ...

I also found my own constellation-Gemini.

How time flies! I hate going back so soon.

You must go to the Beijing Planetarium again in summer. I look forward to that day very much. This is really a happy day!