Shuttle Atlantis unwrapped ahead of public debut

SpaceX is readying two Falcon 9 rockets for a pair of flights nine hours apart Sunday from separate pads along Florida’s Space Coast. Weather permitting, the back-to-back departures Sunday would mark shortest span between two orbital-class launches from Cape Canaveral since 1966.

A SpaceX Falcon 9 rocket stood atop historic launch pad 39A Saturday afternoon as teams counted down to liftoff with 52 more Starlink internet satellites  and two hitchhiker payloads.

Engineers scrambled to keep NASA’s billion-dollar asteroid-bound OSIRIS-REx spacecraft on track for its launch last week in the aftermath of an explosion a mile away at SpaceX’s launch pad at Cape Canaveral.