Now that I'm on the spacecraft
Now that I'm on the spacecraft, there's a whole new battery of tests for the team to put me through! To be honest, sometimes I get tired of all of the tests. But I also know that this is the last round — I'm on the spacecraft, they'll put me through these final checks, and then I'll be ready to go into space. It all feels so close now… when I started this journal, it seemed like I wouldn't be going into space for so long. And now I'm just months away. Crazy, huh?
Today the gang was really excited to find out that things are checking out okay. They'd been worried about my momentum wheels, which are used to rotate the spacecraft. You see, these four wheels spin at a constant speed to keep the spacecraft pointed in the right direction. To rotate the spacecraft, they slow down or speed up one or more of the wheels. Then, in order to conserve the total angular momentum, the spacecraft rotates in the opposite direction of the change in rotation of the wheels. It's a cool physics trick. Anyway, the team checked them out, and everything looks good.
