Elon Musk, the prolific inventor who has engineered everything from PayPal’s financial systems to Tesla’s electric cars, wants to see the spacecraft he designs be the first commercial cargo ships to deliver astronauts to the international space station, and one day to Mars.
And he is right on track.
On May 25, 2012, a SpaceX Dragon spacecraft became the first privately developed vehicle to dock at the International Space Station. And on October 10 he did it again: the second Dragon not only delivered fresh crew supplies and scientific experiments to the Space Station, but returned to Earth with scientific samples that had been stored in the Space Station’s freezers since the retirement of the space shuttle.
"I know my rocket inside out and backwards"