NASA Daily News Summary
For Release: March 31, 1999
Media Advisory m99-063

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Summary

-- Video File for March 31: Landsat 7 Mission: Looking at 
   Earth's Environment

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There are no news releases scheduled for March 31, 1999.

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

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VIDEO FILE FOR MARCH 31, 1999

ITEM 1 LANDSAT 7 MISSION: LOOKING AT EARTH'S ENVIRONMENT
ITEM 2 MARS GLOBAL SURVEYOR ANTENNA (replay)
ITEM 3 SPRINGTIME ON URANUS (replay)

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ITEM 1 Landsat 7 Mission: Looking at Earth's Environment
     Landsat 7, scheduled for launch April 15, will gather 
data from Earth's land surface and surrounding coastal 
regions. Analysis of the data will provide scientists with 
new information on deforestation, receding glaciers and crop 
monitoring. The data also will be available commercially for 
land-use planning and urban development issues. Landsat 7 is 
the last in a series of satellites that began with the 
Landsat 1 in 1972.
 
  ITEM 1A Landsat Animations
  ITEM 1B Collecting the Data
  ITEM 1C Making the Images - The Layers of San Francisco
  ITEM 1D Electromagnetic Spectrum
  ITEM 1E Landsat 7 is Readied at Valley Forge, PA
  ITEM 1F Scientists at EROS Data Center
  ITEM 1G Students at the University of Maryland
  ITEM 1H The Landsat Series - Historical Footage
  ITEM 1I Interview - Phil Sabelhaus, Project Manager
  ITEM 1J Interview - Darrel Williams, Project Scientist
  ITEM 1K Interview - Sam Goward, Science Team Leader
  ITEM 1L Urban Growth
  ITEM 1M Deforestation
  ITEM 1N Atlanta Heat Island
  ITEM 1O Flood Comparison on the Mississippi River
  ITEM 1P Aftereffects of a Volcanic Eruption
  ITEM 1Q Fire Damage of a Conifer Forest
  ITEM 1R Impact Craters
  ITEM 1S Mexico City
  ITEM 1T Grand Canyon
  ITEM 1U Chesapeake Bay
  ITEM 1V International Views

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ITEM 2 Mars Global Surveyor Antenna (replay)
     A steady stream of new data from Mars, including high-
resolution images, will begin arriving next week at Earth 
receiving stations following the March 28 deployment of the 
Mars Global Surveyor's high-power communications antenna. 
Before the antenna was fully deployed, the spacecraft had to 
stop collecting data periodically to transmit the information 
back to Earth. Now that the high-gain antenna is deployed, 
the spacecraft can study the Red Planet 24 hours a day. Video 
shows 1) animation of antenna deployment; 2) three recent 
images of Mars.

Contact at Headquarters: Douglas Isbell, 202/358-1547;
Contact at Jet Propulsion Laboratory: Mary Hardin, 818/354-
0344.

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ITEM 3 Springtime on Uranus (replay)
     If springtime on Earth were anything like it will be on 
Uranus, we would have numerous massive storm systems, each 
one covering the country from Kansas to New York and 
temperatures of 300 degrees below zero. A dramatic 
new time-lapse movie by NASA's Hubble Space Telescope shows 
for the first time seasonal changes on the planet. No one has 
ever seen this view in the modern era of astronomy because of 
the long year of Uranus -- more than 84 Earth years. Uranus 
is now revealed as a dynamic world with the brightest clouds 
in the outer Solar System and a fragile ring system that 
wobbles like an unbalanced wagon wheel. 

Contact at Headquarters: Donald Savage, 202/358-1727;
Contact at Goddard Space Flight Center: Nancy Neal, 301/286-
0039;
Contact at Space Telescope Science Institute: Ray Villard, 
410/338-4514.

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end of daily news summary