A privately owned Dragon cargo ship arrived at the International Space Station on Sunday, a day late, delivering much-needed supplies to the International Space Station. The unmanned Dragon, which has struggled since its Friday launch, is carrying more than one ton worth of supplies for the crew and the crew’s experiments. After the launch, things went slightly awry on the Dragon: a clogged pressure line or stuck valve caused the thrusters to shut down, and it took controllers several hours to gain control.
