Record-setting Polaris Dawn crew aims for early Sunday splashdown in Gulf of Mexico CBS News41-year-old who just completed the first civilian spacewalk dropped out of high school to start his $7 billion business CNBC‘A giant leap’: Why a tech billionaire’s climb outside a spacecraft was so historic CNNSpaceX’s private Polaris Dawn astronauts will return to Earth early Sunday. Here’s how to watch live online Space.comSee The First-Ever Civilian Spacewalk The Weather Channel