Nasa launch hit by spaceman crash
A Nasa astronaut has had to pull out of a space shuttle launch after falling off his bicycle.
The accident happened to Tim Kopra six weeks before the scheduled launch.
Nasa removed him from the crew and added veteran spaceman Stephen Bowen, who flew on the most recent shuttle flight last May.
He will assume Kopra's spacewalking duties during the 11-day flight that has been on hold since November because of fuel tank cracks.