I was impressed with how much information Gwendolyn had retained from last week's class! We reviewed the three types of missions and rockets from the early space program, and Gwendolyn remembered each one and how many crew they carried (Mercury = one astronaut, Gemini = two, Apollo = three). We stepped even further back, and looked at the history of aviation. To think that in only 66 years we went from the Wright brothers' hop-skip-and-a-jump to rockets to the Moon. Along the way, we discussed the pioneers of breaking the sound barrier (Chuck Yeager springs to mind) and how people at the time did not even know if a plane would come structurally undone or not if they went faster than the speed of sound. Gwendolyn asked many relevant questions on the nature of sound, and what does 'the speed of sound' mean, so next Tuesday we'll look further into this topic.