(Phys.org) --NASA's preparing to send its fifth in a series of smartphone-controlled small spacecraft into orbit. PhoneSat 2.5 will ride into space as part of the SpaceX-3 commercial cargo resupply mission to the International Space Station. SpaceX-3 is scheduled to lift off from Cape Canaveral Air Force Station in Florida at 4:41 a.m. EDT Sunday, March 16.