The historic launch of SpaceX was cancelled due to the weather on May 27, 2020.
The Demo-2 mission is the final step towards NASA certification for long-term guided missions. The Falcon-9 launches from Site 39A at the Kennedy Space Center in Florida, then docks with the ISS. Bob and Doug will spend a month to four on the station, and then return to Earth using the same Crew Dragon. The ship will be brought to the Atlantic Ocean, where a rescue ship will wait for it. Only after a successful landing will it be possible to talk about the success of the mission as a whole.