Watch live: SpaceX preps for Falcon 9 test-firing today

SpaceX rolled a reused Falcon 9 booster and a brand new Dragon crew capsule to their launch pad Tuesday at the Kennedy Space Center in Florida for final tests, a day after the astronauts who will ride the spacecraft to the space station arrived for pre-flight preparations.

A test-firing of the Falcon 9’s Merlin main engines is scheduled for 9:26 a.m. EDT (1326 GMT) Wednesday ahead of the launch of NASA’s Crew-4 mission to the International Space Station no earlier than this weekend.

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