NASA has modified its $2.7 billion commercial crew contract with SpaceX to allow Elon Musk’s company to reuse Falcon 9 first stages and Crew Dragon spacecraft for transporting astronauts to the International Space Station (ISS). The reuse of the boosters and spacecraft will begin with the second commercial Crew Dragon flight, which will likely be launched in 2021. The first commercial mission with four astronauts aboard is scheduled to launched […]