SpaceX informs via Twitter that the May 7 launch has become unlikely
SpaceX minutes ago sent out a tweet that the May 7 launch date has become unlikely. A new launch target will be announced soon in a statement. NASA has cleared May 7 as launch date for the Dragon Spacecraft a couple weeks ago. It is not clear what is wrong now.
The Dragon spacecraft will take four days conducting tests in orbit before it attempts to dock with the ISS including making loops around the ISS at varying distances.