Lockheed Space Operations Company STS-51-B Space Shuttle Challenger / OV-099

The Lockheed Space Operations Company Space Shuttle STS-51-B launch was scheduled for:
April 29, 1985 at 4:02 PM UTC.

You can watch the Lockheed Space Operations Company Space Shuttle launch video on this page. The official video includes full mission coverage with multiple camera angles, onboard views, and expert commentary covering pre-launch procedures, liftoff, stage separation, and payload deployment.

The Lockheed Space Operations Company Space Shuttle rocket launched from Launch Complex 39A at Kennedy Space Center, FL, USA. The John F. Kennedy Space Center, located on Merritt Island, Florida, is one of NASA's ten field centers. Since 1968, KSC has been NASA's primary launch center of American spaceflight, research, and technology. Launch operations for the Apollo, Skylab and Space Shuttle programs were carried out from Kennedy Space Center Launch Complex 39 and managed by KSC. Located on the east coast of Florida, KSC is adjacent to Cape Canaveral Space Force Station (CCSFS).

The STS-51-B mission launched aboard a Lockheed Space Operations Company Space Shuttle rocket. The Space Shuttle is a retired, partially reusable low Earth orbital spacecraft system operated from 1981 to 2011 by the U.S. National Aeronautics and Space Administration (NASA) as part of the Space Shuttle program. Its official program name was Space Transportation System (STS). Five complete Space Shuttle orbiter vehicles were built and flown on a total of 135 missions from 1981 to 2011. Detailed rocket specifications and performance data are available in the rocket details above.

The Lockheed Space Operations Company Space Shuttle STS-51-B launch could have been delayed by various weather conditions including lightning within 10 nautical miles, high winds (especially upper-level winds), thick cloud layers, precipitation, and poor visibility. Weather must be favorable at the launch site, downrange landing zones, and abort landing sites.

This page was updated in real-time with the latest Lockheed Space Operations Company Space Shuttle launch status, including any delays or scrubs for the STS-51-B mission. You can also check our space launch schedule for historical launch information. Our mobile app provides push notifications for instant alerts about launch status changes. Official Lockheed Space Operations Company live streams provided the most immediate range updates during the launch window.