Countdown clocks are ticking this morning at NASA’s Kennedy Space Center in Florida, where a SpaceX Falcon 9 rocket awaits liftoff at 12:31 p.m. EDT from Launch Complex 39A. Atop the rocket is a SpaceX Dragon spacecraft packed with more than 6,400 pounds of science research, crew supplies and hardware bound for the International Space Station.
Be sure to join us at noon Eastern for frequent updates from the countdown.