STS-127 Commander Mark Polansky, center, speaks to students during a visit to Anne Beers Elementary school, Thursday, Sept. 24, 2009, in Washington. Polansky, along with the rest of the crew from STS-127, visited with students at the school Thursday. Seated from left are Canadian Space Agency astronaut Julie Payette, Chris Cassidy, Doug Hurley, David Wolf and Tom Marshburn. Photo Credit: (NASA/Paul E. Alers)