Since 2012, Elon Musk's company, Space Exploration Technologies Corp. otherwise known as SpaceX, has been providing cargo delivery services for NASA as part of their Commercial Resupply Services (CRS) contracts to the International Space Station after the end of the Space Shuttle era.  However, the bar has been raised and SpaceX is now contracted to fly similar missions with critical pressurized & unpressurized cargo to NASA's planned lunar orbiting space station called Gateway under their new Gateway Logistics Services (GLS) contract.