Don Pettit is a chemical engineer from Silverton, Oregon who also happens to be an astronaut!  An avid amateur astronomer, he is a veteran of three flights into space: once on a space shuttle flight, and two more aboard the ISS where he logged more than six months in space.  Don brings his expertise and interest in amateur astronomy to everything he does, including conducting some observations from orbit and as the oldest active NASA astronaut, has a lot of wisdom and experience to share.