NASAreckons some 10 million people watched online as SpaceXlaunched two US astronauts into space from US soil for the first time since 2011, on Saturday, May 30. The SpaceX mission, dubbed Demo-2, launched astronauts Bob Behnken and Doug Hurley on a Falcon 9 rocket to the International Space Station (ISS). After an 19 hour journey in space, their spacecraft, a Crew Dragon capsule named Endeavour, has reached the ISS.