SpaceX to make history in Florida with first astronaut mission to space station

SpaceX is poised to make history on Wednesday with the first commercial launch of a spacecraft with astronauts onboard. The mission also marks the first crewed launch to the International Space Station from the United States since 2011 and sets the stage for regular trips to and from the space station, as well as NASA's ambitions to return to the moon and explore Mars and beyond. Wednesday's launch is actually a demonstration mission of SpaceX's human spaceflight system to be certified for NASA's…