Dave, over at scripting news, has some great coverage of the current events ragarding the Space Shuttle Columbia. His coverage is much better than anything I could offer, and I have nothing else to say as I haven't really wrapped my head around all of this yet. More later.
The LGF take on things, also very good. Look there for links to Reagan's speech following the Challenger disaster, still relevant now...
The future doesn't belong to the fainthearted; it belongs to the brave. -- Ronald Reagan