How to write my ideal short sentence?

"My Ideal" train of thought: unfold according to your own ideal and elaborate with your own ideas.

Everyone has his own ideal in his heart, but my ideal is to be an excellent astronaut when he grows up and explore the endless unknown outer space. When I was a child, some questions about astronauts and outer space flashed through my mind from time to time. I often ask my mother curiously why the earth is round and how humans can fly out of it.

At that time, my mother always patiently said to me, "You should study science and learn to find answers through what you know." . After listening to my mother's words, a strong heart makes me want to board my own rocket, shuttle between universes and roam in the vast starry sky.

I remember one holiday, I was watching TV at home, and a news deeply touched me. The news is about "the astronauts are back." I think astronauts are really great heroes, because they explore space, observe and study galaxies in space, bring back space information and report their life and work in space to the people of the whole country.

Therefore, for my ideal and my goal, from now on, I will study scientific and cultural knowledge well and advance to the path of astronauts step by step!