Former space shuttle Columbia crew reunites

U.S. Sen. Bill Nelson hosted a 25th reunion of the Columbia shuttle crew he joined during a weekend of celebrating their giddy success while also somberly reflecting on the dangers of human spaceflight.

The Orlando Democrat hosted crew members for a dinner at his home Saturday. He then led them on a Sunday tour of the Capitol, with a pause for a moment of silence at a first-floor painting of the crew of shuttle Challenger, which blew up 10 days after Nelson's flight landed.

"That's what makes us gathering up all the more special to me," Nelson said.