NASA Daily News Summary For Release: Oct. 22, 1999 Media Advisory m99-220 Summary: No News Releases Today NASA TV will undergo maintenance this weekend, beginning at 5:00 pm EDT today, Oct. 22 and continuing through Sunday, Oct. 24. Regular programming will resume Monday, Oct. 25th. Please note that this means that video file will run today at noon and 3:00 pm only. ITEM 1 - SHARPEST PICTURE EVER TAKEN OF JUPITER'S VOLCANIC MOON IO ITEM 2 - JUPITER'S MOON IO FLYBY (file footage replay) ITEM 3 - INSPECTION '99 PSAs - JSC (replay) ********** If NASA issues any news releases later today, we will e- mail summaries and Internet URLs to this list. Index of 1999 NASA News Releases: http://www.nasa.gov/releases/1999/index.html ********** Video File for Oct. 22, 1999 ITEM 1 - SHARPEST PICTURE EVER TAKEN OF JUPITER'S VOLCANIC MOON IO This black-and-white image is the highest resolution picture ever taken of Jupiter's volcanic moon Io. The image was taken by NASA's Galileo spacecraft on Oct. 10, 1999, during its 24th orbit of Jupiter, at an altitude of 420 miles (670 km). The image resolution is 30 feet (9 meters) per pixel, 289 times better than Galileo's earlier views of this region and 50 times better than the best Voyager image. This image targeted lava flows that erupted from the volcano Pillan. It shows a complex mix of smooth and rough areas with clusters of pits and domes, many of which are the size of houses. The volcanic features are similar to those found on the Earth and Mars. However, this complex combination of different types of lava flows has not been seen before in such a small area, demonstrating the variety of volcanic processes that continue to change the surface of Io. Galileo scientists estimate that the cliff on the left side of the image ranges from 3 to 10 meters (10 to 33 feet) high. Contact at NASA Jet Propulsion Laboratory, Pasadena, CA: Jane Platt 818/354-5011. Contact at NASA Headquarters, Washington, DC: Doug Isbell 202/358-1753. Image Credit: NASA/JPL/University of Arizona ITEM 2 - JUPITER'S MOON IO FLYBY (file footage replay) Contact at NASA Jet Propulsion Laboratory, Pasadena, CA: Jane Platt 818/354-5011. Contact at NASA Headquarters, Washington, DC: Doug Isbell 202/358-1753. Item 2a - 10th anniversary: Io Flyby Animation TRT - :55 NASAšs Galileo spacecraft was launched on Oct. 18, 1989, aboard the Space Shuttle Atlantis on a mission to map Jupiter and its moons. Galileošs path was designed to use gravity assist, which menas that other planets like a slingshots to propel the spacecraft toward its destination. Galileo reached Jupiter in December 1995 and has mapped the planet and its moons--Callisto, Europa, Ganymede and Io--as seen in the following archives. Galileo has also taken photos of Earth and our moon. This particular animation shows the spacecraft on its recent flyby of Io, with Jupiter and its other moons nearby. OTHER ARCHIVE MATERIALS IN THIS VIDEOFILE INCLUDE: Item 2b - Main Ring of Jupiter TRT - :25 This view of the ring system of Jupiter was imaged by the Galileo spacecraft on Nov. 9, 1996. In this image the west ansa of Jupiteršs main ring is seen at a resolution of 24 kilometers per pixel. The ring clearly shows the radial structure that had only been hinted at in the Voyager images. Item 2c - Features of Europa TRT - :25 This mosaic shows many of the features of Jupiter's moon Europa observed by the Galileo spacecraft. Brown linear ridges could be frozen remnants of cryovolcanic activity. Dark spots are seen, along with an older, smoother, bluish surface composed of almost pure water ice. The dark, brownish spots may contain mineral salts in high water content. Item 2d - Ganymede close-up TRT - :57 Animation depicting Galileošs encounter with Jupiteršs moon Ganymede which occurred on June 27,1996. Item 2e - Galileo looks at Earth and moon TRT - :53 Earth as seen from Galileo when it flew by in 1990. Item 2f - PIA 01298 - File image of Callisto TRT - :10 The pock-marked moon Callisto is the oldest of Jupiteršs four largest moons. This image was taken in November 1997 by the Galileo spacecraft. Item 2g - PIA 01657 - File image of Tindr TRT - :10 The crater Tindr, on the surface of Jupiteršs moon Callisto, was most likely caused by an asteroid impact. This image was taken in September 1997 by the Galileo spacecraft. Item 2h - File Images from the Galileo mission TRT - 4:47 * Animation of the atmosphere of Jupiter * Internal structure of Ganymede * Zoom into Ganymede * Zoom and pan into Europa * Simulated fight into ice rafts on Europa ITEM 3 - INSPECTION '99 PSAs (replay) TRT: one @ :10 & one @ :30 The following videos are public service announcements for NASA's Technology Showcase Inspection '99 at Johnson Space Center on November 3 - 5, 1999. Contact at NASA Johnson Space Center, Houston, TX: Ed Campion 281/483-5111. ---------- Unless otherwise noted, ALL TIMES ARE EASTERN. ANY CHANGES TO THE LINE-UP WILL APPEAR ON THE NASA VIDEO FILE ADVISORY ON THE WEB AT ftp://ftp.hq.nasa.gov/pub/pao/tv-advisory/nasa-tv.txt WE UPDATE THE ADVISORY THROUGHOUT THE DAY. The NASA Video File normally airs at noon, 3 p.m., 6 p.m., 9 p.m. and midnight Eastern Time. NASA Television is available on GE-2, transponder 9C at 85 degrees West longitude, with vertical polarization. Frequency is on 3880.0 megahertz, with audio on 6.8 megahertz. Refer general questions about the video file to NASA Headquarters, Washington, DC: Ray Castillo, 202/358-4555, or Elvia Thompson, 202/358-1696, elvia.thompson@hq.nasa.gov During Space Shuttle missions, the full NASA TV schedule will continue to be posted at: http://spaceflight.nasa.gov/realdata/nasatv/schedule.html For general information about NASA TV see: http://www.nasa.gov/ntv/ ********** Contract Awards Contract awards are posted to the NASA Acquisition information Service Web site: http://procurement.nasa.gov/EPS/award.html ********** The NASA Daily News Summary is issued each business day at approximately 2 p.m. Eastern time. Members of the media who wish to subscribe or unsubscribe from this list, please send e-mail message to: Brian.Dunbar@hq.nasa.gov ********** end of daily news summary