Discovery, with the payload for STS-131 secured in the Rotating Service Structure. Image: Alan Walters (awaltersphoto.com)

March 28th, 2010 by Nancy

Discovery, with the payload for STS-131 secured in the Rotating Service Structure.  Image:  Alan Walters (awaltersphoto.com)

Discovery, with the payload for STS-131 secured in the Rotating Service Structure. Image: Alan Walters (awaltersphoto.com)