Results from the first studies of cometary samples returned to Earth by NASA's Stardust spacecraft is the subject of a news conference at 3 p.m. EST, Monday, March 13, from NASA's Johnson Space Center, Houston

The briefing airs live on the Web and on NASA TV's Public and Media channels. Reporters may ask questions from participating NASA centers. Participants:

-- Thomas Morgan, Program Scientist, NASA Headquarters

-- Donald Brownlee, Principal Investigator, University of Washington, Seattle

-- Peter Tsou, Deputy Principal Investigator, Jet Propulsion Laboratory, Pasadena, Calif.

-- Michael Zolensky, Curator and Co-investigator, Johnson Space Center

NASA TV's Public, Education and Media channels are available on an MPEG-2 digital C-band signal accessed via satellite AMC-6, at 72 degrees west longitude, transponder 17C, 4040 MHz, vertical polarization. In Alaska and Hawaii, they're on AMC-7 at 137 degrees west longitude, transponder 18C, at 4060 MHz, horizontal polarization. For digital downlink information on the Web, visit:

http://www.nasa.gov/ntv

For information about Stardust on the Web, visit:

http://www.nasa.gov/stardust

For information about NASA and agency programs on the Web, visit:

http://www.nasa.gov/home