Live coverage: Atlas 5 blasts off from California

The launch for the second Falcon Heavy rocket from the Kennedy Space Center in Florida has slipped until Wednesday at the earliest. The powerful rocket is due to carry the Arabsat 6A communications satellite into orbit.

An unmanned cargo freighter carrying nearly four tons of supplies and science, launched and operated commercially for NASA, blasted off from Cape Canaveral on Tuesday atop an Atlas 5 rocket bound for the International Space Station.

This is the launch timeline to be followed by the Atlas 5 rocket’s ascent into orbit from Cape Canaveral with the advanced GOES-R weather satellite for NASA and NOAA. Launch is scheduled for Saturday at 5:42 p.m. EST (2242 GMT).