From the sixth flight onwards, this was replaced with the stretched Falcon 9 v1.1 ... subsequent Block 4 and Block 5 vehicles have been incremental enhancements on the Full Thrust design.

The Falcon 9 took flight at 4:14 p.m. ET from Cape Canaveral, Florida, carrying the Bangabandhu Satellite-1 -- a communications ... which is part of the Falcon 9's block 5, represents the ...

The Falcon 9 upper stage failed to deorbit as planned following its Feb. 1 launch. A SpaceX rocket stage fell to Earth early Wednesday (Feb. 19), blazing a trail of fire through European skies.