"We'll leave the light on." - Expedition 14 Commander Michael Lopez-Alegria, on the STS-116 launch, December 9.

"Everything will be fine - if nothing breaks." - Lead Space Station Flight Director John Curry, on the STS-116 mission, September 22.

"Humans are not perfect, and they're not perfectable." - NASA Administrator Mike Griffin, September 21.

"To the folks at KSC - Atlantis was a terrific ship! It was critical that she perform well and she did." - STS-115 Commander Brent Jett, September 21.

"We have a saying back in Texas: 'It's time to walk the walk.'" - STS-115 Commander Brent Jett, August 26.

"I welcome home the crew of the Space Shuttle Discovery from a safe and successful mission. Your courage and commitment to excellence have inspired us all..." - President George W. Bush, on the safe return of the crew of STS-121, July 17.

"like a bug on the end of a fishing rod here." - STS-121 astronaut Piers Sellers, during EVA on the end of an oscillating robotic arm/extension pole, July 8.

"All of us will feel Eileen's absence, but regardless of the path she pursues after leaving NASA, I know she will continue to exert a positive influence on the explorers of today and tomorrow." - Ken Bowersox, Flight Crew Operations Director, NASA, on Eileen Collins, May 1.

"According to Einstein's math, when two massive black holes merge, all of space jiggles like a bowl of Jell-O" - Grey Hautaluoma (NASA HQ), Susan Hendrix (Goddard SFC), April 18.

"Valery refers to us as 'Space Brothers', so we really weren't away from family the whole time" - Bill McArthur (Expedition 12) on Valery Tokarev, April 3.

"We just know that the Moon was between the Earth and the Sun" - Pavel Vinogradov (Expedition 13), on the Solar eclipse, March 29.