Several hundred materials samples returned to Earth with the STS-128 space shuttle crew.
Models join flags and medallions as commemorations of Discovery's flight to the International Space Station.
On Earth, we all know that exercise is good for us. But do we know exactly how good?
"It’s one of the best parts of our job I think, getting out and thanking the people who build all this hardware and even the design folks, all the maintainers it takes to keep the support equipment going, just the whole big picture."
"It’s time that we start exploring other worlds. And future generations are going to thank us for it."
"During the flight I’m really looking forward to the ascent, that acceleration for eight and a half minutes."
"To go up there to the space station is pretty phenomenal to start with and to open the hatch and see folks from your office that you’ve trained with and that you work with that have been living in space for a long period of time is pretty unique."
"I think the space station’s really a prime example of how people from all the world can work together"
"We’re out there, we’re exploring space, we’re setting the path for the future and humanity will continue to explore space from here and this is the first step."
"I think it’s a really exciting time not only for the space station program but also for just figuring out how to better live and work in space."