On Tuesday, the (Stephen) COLBERT treadmill heads to the space station via the Discovery space shuttle. But why? Does NASA really need the star power? Tags: 0 comments 0 likes 0 shares Share this: Kristie Lu Stout About author not provided I'm a CNN anchor/correspondent based in Hong Kong. https://edition.cnn.com/profiles/kristie-lu-stout 55697 followers 53118 likes "http://edition.cnn.com/profiles/kristie-lu-stout" View all posts