The crew of Columbia had a higher mission - one to teach us about ourselves. And they still teach us today in the wake of Obama's wish of NASA's new direction (or lack thereof...). The spirit of Rick Husband, William McCool, David Brown, Kalpana Chawla, Michael Anderson, Laurel Clark, and Ilan Ramon will always remain in our hearts and encourage us to explore into the unknown despite whatever setbacks we may encounter on the way!
My original tribute site can be seen here. My experience in the Super Bowl XXVIII Pre-Game Show Tribute to Columbia. Still very moving flash tribute.