TEMPE – The Antares rocket that exploded shortly after liftoff from the Virginia coast Wednesday on a resupply mission to the International Space Station was partly designed and built at Orbital Sciences Corp.’s facility in Chandler. No one was hurt in the explosion of the unmanned rocket, and astronauts in the space station have enough food and other supplies to last until another NASA supply mission can be mounted. Now, the search for a cause to the fiery explosion begins.