Just a day after launching to orbit, SpaceX's new Crew Dragon capsule has arrived at the International Space Station. <br />It docked to a port on the ISS on Sunday - a test that would prove crucial in getting approval from NASA to carry astronauts. <br />The Dragon was only carrying a dummy pilot, but SpaceX aims to start flying American astronauts later this year and put an end to the years-long reliance on Russia to ferry crew to and from the ISS. <br />Another four days of testing remain before getting the green light from NASA. <br />If all goes well, SpaceX could launch two astronauts this summer under Nasa's commercial crew program. <br />
