We have an hour and 14 minutes before the launch this morning of SpaceX’s Falcon 9 rocket and Dragon spacecraft on a cargo-delivery mission to the International Space Station. Liftoff is scheduled for 2:14 a.m. EDT from Launch Complex 40 here at Cape Canaveral Air Force Station. The launch window is instant since the Dragon has to be put on a precise path to catch the ISS which is moving at 17,500 mph. Weather is the primary concern and the chance of acceptable conditions has dropped to 30 percent. There are no technical concerns at this hour as the launch teams for the company and NASA track the milestones during this last phase of the countdown. The Dragon spacecraft is equipped only to carry cargo and has been loaded with 5,000 pounds of materials the crew of the space station will put to use. We’ll detail some of the experiments and other elements going up on this flight as the blog goes along. We’ll also track all the countdown highlights as they occur and tell you a few things about the Falcon 9 and Dragon spacecraft.