Live coverage: SpaceX scrubs launch of four-man crew to space station

SpaceX called off the launch a Falcon 9 rocket and Crew Dragon spacecraft at 1:45 a.m. EST (0645 GMT) from NASA’s Kennedy Space Center in Florida to evaluate an issue with the system used to ignite the rocket’s main engines. When it takes off, the mission will send two NASA astronauts, an Emirati astronaut, and a Russian cosmonaut on a six-month mission on the International Space Station.