SpaceX's launch of NASA astronauts was scrubbed and rescheduled for Saturday due to poor weather, just 17 minutes before liftoff

· SpaceX and NASA were set to launch astronauts to the International Space Station on Wednesday. 
· A successful launch would have resurrected human spaceflight in America after a nine-year gap.
· But weather conditions, including a threat of lightning strikes, made the skies unsafe for liftoff, forcing NASA and SpaceX to...