Update: Monday’s launch was cancelled because of a helium leak. The next window for launch is this coming Friday, April 18.
Original story: SpaceX is launching a rocket this afternoon. The live webcast begins at 12:45 PST and the launch itself is scheduled for 1:58.
NASA TV is streaming coverage:
Live streaming video by Ustream
The Dragon spacecraft is headed for the International Space Station. The unmanned mission is delivering cargo, including scientific experiments from NASA’s Ames Research Center in Silicon Valley.