NASA-space center

Yesterday we arrived in Houston, Texas where Brian's work is located. Today he had to work, so me Nico and Sara went to the space center NASA. We heard a real astronaut speak and touched a real moonstone. We also saw a huge spacecraft that had been around the moon and a control center where they communicate with astronauts in space.
I was so impressed!
We learned about how it is to be in space. I have to say, It' s not a luxury vacation, even though it would be cool to fly around in the air! One example is that they have to recycle their urine and use it as water. When you are in 0 gravity you also loose a lot of muscle mass so they have to exercise 2 hours everyday.
Today was really interesting and very fascinating, and now I can say that I met an astronaut!