In the winter holiday, I attended a lecture on astronomy by Professor Wang in the Science and Technology Museum in our city.
In the lecture, I learned something about the solar system, an amazing world that I knew little about before.Professor Wang showed us a lot of pictures and videos, which made us have a sound knowledge of other planets. When the lecture was over, we got a chance to ask him some questions.
This valuable experience made me believe that there are still many secrets about the universe waiting to be explored. And I am determined to study harder and make a contribution to astronomy in the future.

Dear Sir,
I am glad to hear that a summer camp about aerospace will be held. It attracts me a lot, and I sincerely hope that I can participate in.
Here are my ideas for the camp. First, there should be some time to enjoy and admire true spaceships or rockets that have been used or will be used, which can increase our interest. Then I hope you can invite some astronauts to share their experience with us. Besides, I hope we can have the chance to experience it in the experimental situation. And it will be better if we can be taught to make some aircraft models and take them as gifts for family and friends.
I am looking forward to your reply.
Yours,
Li Hua