Gabby
The VAB and a Real Astronaut
Today
I went to the Kennedy Space Center. It was so much fun. We took an hour-long
bus ride from our hotel to get there. I saw a huge building called the
Vehicle Assembly Building (VAB). This is the building where they put
the shuttle together with the fuel tanks. I learned what substance goes
inside the shuttleÕs external tank. It is filled with liquid oxygen
and liquid hydrogen. The shuttle is 185 feet tall. The doors to let
the shuttle out are very tall. The building is so big that when we were
miles away it still looked huge. I also learned that when the shuttle
is launching they put 300,000 gallons of water on the launch pad under
the shuttle to absorb the sound. Even with the water, the noise is extremely
loud when the shuttle launches.
When
the shuttle returns from space, friction occurs from the EarthÕs atmosphere
and it burns all over the outer layer of the shuttle. We had a demonstration
about the material that is used to keep it from burning up. The shuttle
is covered with tiles that get bigger as they get hotter.
I learned so much more from a real astronaut, Rick Searfoss. He really
went to space and our group talked to him. He answered my question.
I asked him, "DonÕt the thermo blankets tear when you use them? They
look so thin." His answer was, "No. The ones we use in space are much
thicker than the ones you buy at camping stores."
He
also said, "Since there is almost no atmosphere in space, they donÕt
suffer the same stresses as they do on Earth." Thermo blankets are space
blankets that look like foil. When folded they weigh a couple of ounces,
but they can warm your whole body. All the heat coming out of your body
bounces off the blankets and then goes back in your body.
I learned facts about the shuttle that are memorable. "The shuttle
takes off like a rocket, flies like a space craft and lands like a glider."
I had an excellent time at Kennedy Space Center and I will remember
it for the rest of my life.