Launch Of World's Largest Rocket Postponed

Next weekend's launch of the Delta-4 Heavy has been postponed. The launch, which was to take place at Cape Canaveral, has been delayed due to unspecified payload issues. The launch is for the National Reconnaissance Office, a fairly secretive branch of the U.S. Government that's in charge of the nation's spy satellites. As such, they aren't revealing too many details about the launch, or the postponement. The Delta-4 Heavy rocket is a combination of three booster cores from the Delta Medium. Eac...