Headline News Internal Communications Branch (P-2) NASA Headquarters Friday, May 22, 1992 Audio Service: 202 / 755-1788 This is NASA Headline News for Friday, May 22, 1992 . . . On Tuesday, May 26, Administrator Daniel Goldin will address NASA employees at 1:30 pm EDT on NASA Select television. * * * * * * * * * * * * * * * * Endeavour will not be ferried back to Florida today. Weather between California and Texas is unacceptable again. The 747 Shuttle Carrier Aircraft crew will continue to assess the weather conditions on a day-by-day basis. There is a 50-50 chance of being able to take off tomorrow. The flight still requires a refueling stop and, given enroute weather conditions, the SCA/Endeavour pair may remain at the stop until weather improves. Because of the changing weather conditions, there is no single designated refueling stop, but rather a set of airfields which could be used should the flight get underway this weekend. * * * * * * * * * * * * * * * * On Tuesday, May 26, NASA will hold the pre-launch background briefings for Columbia's STS-50 US Microgravity Laboratory-1 mission. Flight director Bob Castle, Johnson Space Center, and mission manager Charles Sprinkle, Marshall Space Flight Center, will begin the series of briefings at 9:30 am EDT with a mission overview. At 10:30 am EDT, USML-1 program scientist Dr. Roger Crouch and mission scientist Dr. Don Frazier will discuss the science investigations planned for the 13-day mission. At noon, JSC chief of medical sciences Dr. Sam Pool will discuss medical issues associated with this first extended duration mission. At 2:30 pm EDT, mission commander Dick Richards and his six-person crew will give their briefing and take questions from the news media. The briefings will be carried live on NASA Select television. Technicians working on Columbia expect to be able to move that orbiter from the Orbiter Processing Facility to the Vehicle Assembly Building on Wednesday, May 27, as preparations for Columbia's STS-50 US Microgravity Laboratory-1 mission near completion. * * * * * * * * * * * * * * * * Kennedy Space Center payload processing technicians last evening moved the Extreme Ultraviolet Explorer spacecraft from its cleanroom in Hangar AE to the Cape Canaveral Air Force Station Launch Complex 17 area. The spacecraft will be mated to the Delta 2 launch vehicle today and will then undergo a series of integrated spacecraft/launch vehicle tests. The presently scheduled launch window opens at 12:23 pm EDT on Thursday, June 4, and extends until 1:43 pm EDT. * * * * * * * * * * * * * * * * The STS-49 crew will hold their post-mission press conference next Friday, May 29, at the Johnson Space Center at 10:00 am EDT. The crew will show movies and still photographs they took during the daring and successful satellite rescue mission. The briefing will be carried live on NASA Select television. * * * * * * * * * * * * * * * * Jet Propulsion Laboratory flight controllers report that Magellan continues to perform nominally in its radar-mapping orbit about Venus. A special three-orbit high-resolution altimetry test is scheduled to be performed by Magellan this Sunday, May 24. As of this week, Magellan has mapped more than 97 percent of the surface of Venus. About 35 percent of the surface mapping has been performed in both right-looking and left-looking modes. Approximately 20 percent of the surface has been imaged in different, left-looking, radar incidence angles producing true stereographic coverage. Here's the broadcast schedule for Public Affairs events on NASA Select TV. Note that all events and times may change without notice, and that all times listed are Eastern. Friday, May 22, 1992 12:00 pm NASA Today news program. 12:15 pm Age of Space Transportation. 12:30 pm Progress in Aeronautics. 1:00 pm STS-1 - A Remarkable Flying Machine. 1:30 pm Life into Space. 2:00 pm Starfinder program #9. 2:15 pm Aeronautics & Space Report. 2:30 pm Life in the Universe program #9. 3:00 pm Journey through the Solar System program #9. 3:30 pm And Then There Was Voyager. 4:00 pm NASA Today and subsequent programming repeats. 8:00 pm NASA Today and subsequent programming repeats. 12:00 am NASA Today and subsequent programming repeats. Tuesday, May 26, 1992 9:30 am Flight director and mission manager background briefing on STS-50 mission overvue, from Johnson Space Center and Marshall Space Flight Center. 10:30 am Program and mission scientists briefing on overall science objectives of US Microgravity Laboratory-1 experiments aboard STS-50 mission, from Marshall Space Flight Center. 12:00 pm Medical science briefing on crew health aspects of the STS-50 long duration mission, from Johnson Space Center. 1:30 pm Administrator Daniel Goldin addresses NASA employees. 2:30 pm STS-50 flight crew briefing from Johnson Space Center. Friday, May 29, 1992 10:00 am STS-49 flight crew post-mission press conference from Johnson Space Center. This report is filed daily at noon, Monday through Friday. It is a service of NASA's Office of Public Affairs. The editor is Charles Redmond, 202/453-8425 or CREDMOND on NASAmail. NASA Select TV is carried on GE Satcom F2R, transponder 13, C-Band, 72 degrees West Longitude, transponder frequency is 3960 MegaHertz, audio subcarrier is 6.8 MHz, polarization is vertical.