NASA says everything’s on schedule for SpaceX’s world-first commercial robotic flight to the International Space Station, currently scheduled for April 30. The flight is a test of sorts, for SpaceX’s Dragon spacecraft’s capabilities, and the company’s ability to deliver on the promise of unmanned transportation of goods to/from the ISS. If all goes to plan, SpaceX officials hope to begin regular deliveries for NASA by the end of 2012. (Photo by Robert Goodwin) source