Orbital Sciences Corporation has confirmed the next opportunity to test launch its Antares rocket from NASA's Wallops Flight Facility in Virginia will be no earlier than 5:00 p.m. EDT on Saturday, April 20. NASA TV coverage of the launch will begin at 4:30 p.m. By the time coverage starts, the launch window will likely have been reduced to 10-15 minutes. An attempt Friday was called off after review of the weather forecast. Saturday’s forecast indicates an 85 percent chance of favorable conditions. If needed, a back-up launch opportunity is available on Sunday. For an updated briefing and NASA TV coverage schedule, follow: http://www.nasa.gov/orbital.