SpaceX plans plenty of launches before heading off to Mars
Once the launchpad for Apollo and space shuttle flights, NASA's Launch Complex 39A is now in the hands of SpaceX and its enigmatic billionaire leader, Elon Musk. With a 20-year lease, the privately held Hawthorne, Calif.,-based company is rebuilding the launch complex at Kennedy Space Center to fit its rockets — the Falcon 9 and the…