Photos: Atlas 5 rocket aims for International Space Station

SpaceX’s Falcon 9 rocket is set for liftoff from Cape Canaveral on Tuesday, heading due east over the Atlantic Ocean to deliver the GovSat 1 communications satellite into orbit around 32 minutes later.

More than two dozen satellites from the U.S. military, NASA and research institutions will ride into orbit on SpaceX’s second Falcon Heavy rocket launch, a mission currently scheduled for liftoff in June, a military spokesperson said.

Russian ground controllers decided Tuesday to delay the docking of a Progress supply freighter to the International Space Station until Thursday after telemetry signals indicated two radar navigation antennas may not have deployed following the ship’s launch from Kazakhstan.