MIAMI:- SpaceX has postponed its first rocket launch since an explosion after liftoff destroyed its unmanned Dragon cargo ship bound for the International Space Station six months ago. After liftoff, SpaceX will attempt to land the first stage of its Falcon 9 rocket in an upright position on solid ground for the first time, a milestone it sees as key to making rockets as reusable as commercial airplanes one day. The Falcon 9 rocket is now scheduled to launch at 8:33 pm Monday (0133 GMT Tuesday) from Cape Canaveral, Florida, the California-based company said.–afp

Several previous attempts at landing the rocket on a floating ocean platform have failed, but SpaceX says each try has taught them more about how to succeed in the future.