Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. NASA Scrubs Space Shuttle Launch VOA News 05 November 2010 This image of space shuttle Discovery was taken as the craft began its nighttime trek, known as "rollout," from the Vehicle Assembly Building to Launch Pad 39A. Photo: NASA This image of space shuttle Discovery was taken as the craft began its nighttime trek, known as "rollout," from the Vehicle Assembly Building to Launch Pad 39A. NASA scrubbed Friday's scheduled launch of the space shuttle Discovery after a hydrogen leak was found in the craft's external fuel tank. In a statement, NASA said the leak was discovered as the shuttle's external tanks were being filled in preparation for launch later in the day. NASA officials say they are meeting to determine the next steps and will hold a news conference later in the day. Discovery was originally scheduled to launch on Monday. It has been delayed by technical problems and severe weather at the Florida launch site. Discovery's six-member crew will deliver a final module for the U.S. portion of the orbiting laboratory during its 11-day mission. It is also carrying the world's first humanoid robot, Robonaut 2, into space. This will be Discovery's 39th and final flight in its 26-year history. NASA's shuttle fleet will be retired next year, bringing an end to the 30-year-old space shuttle program. Some information for this report was provided by AP, AFP and Reuters. .