SpaceX to build mini version of Mars rocket using Falcon 9
Elon Musk on Thursday said that his space startup SpaceX is planning to build a mini version of its Mars rocket 'BFR' by upgrading the second stage of its Falcon 9 rocket. "Aiming for orbital flight by June," Musk said in a tweet. SpaceX specifically designed the BFR for manned and cargo missions to the Moon, Mars and other locations. 