A glaring hole in US space capability is finally filled after the safe arrival of SpaceX's new Crew Dragon at the International Space Station on 31st May 2020. Apart from the odd brief Virgin Galactic jaunt to the edge of space, it's the first time since the retirement of the Space Shuttle in 2011 that astronauts have launched from American soil. More importantly, it's the beginning of a new era in the private development of space exploration and human spaceflight.