SpaceX's NASA Mission To International Space Station: Dragon Docking Delayed By A Day

SpaceX's Dragon cargo spacecraft, carrying 5,500 pounds of supplies and scientific experiments to the International Space Station, abandoned its attempts to dock with the ISS early Wednesday after its GPS navigation system had some trouble. The docking maneuver, in which astronauts aboard ISS use the space station's robotic arm to engage Dragon, is now scheduled for 6 a.m. EST Thursday. During the live coverage Wednesday morning on NASA TV, commentator Rob Navias said: "Dragon aborted its approach to the International Space Station because of an apparent problem with what is called the filter on the Relative Global Positioning System (RGPS) hardware that basically tells the Dragon's on-board computers what its relative position in the sky is to the International Space Station." When the safety system on Dragon aborted its approach to the ISS, it was over 3,500 feet away. There was no impact to the space station, and crew onboard was in no danger.