Following the Launch Readiness Review, NASA and SpaceX have given the Crew Dragon launch atop the Falcon 9 rocket a go-ahead. However, the weather will still prove to be an important consideration.
Nasa commercial crew program RSS
As part of NASA's Commercial Crew Program, Boeing will be conducting the maiden, unmanned flight test of its CST-100 Starliner vehicle atop the United Launch Alliance Atlas V rocket at 6:36 AM EST.
Unlike the previous run in April, which resulted in an explosion in the spacecraft, today, SpaceX was able to complete the static fire tests successfully after redesigning some components.