If you were amongst those that got up very, very early on Saturday to watch SpaceX's historic mission to the International Space Station, you were probably disappointed when the countdown hit zero but the rocket didn't go anywhere. Now, it seems that the issue at the heart of the aborted launch has been traced to faulty check valve. Crews are already working to fix the problem, but the question is if it can be done in time.
This post has been updated with information from a 6:30 AM NASA press conference. Today's 4:55 AM EDT launch of SpaceX's Dragon spacecraft atop their Falcon 9 rocket was scrubbed with only 0.5 seconds left on the countdown clock when the vehicle's onboard computer detected that something was amiss. Though all nine engines on the rocket had ignited and flames has started to billow outward, the Falcon 9 stayed on the pad.