November 24, 2003 Donald Savage Headquarters, Washington (Phone: 202/358-1727) Guy Webster Jet Propulsion Laboratory, Pasadena, Calif. (Phone: 818/354-6278) NOTE TO EDITORS: n03-128 NASA SCHEDULES MARS EXPLORATION ROVER BRIEFING Preparations for the January Mars landings by NASA's two mobile robotic geologists, Spirit and Opportunity, will be discussed at a press briefing 1:00 p.m. EST, Dec. 2, 2003. The briefing is in the NASA Headquarters Webb Auditorium, 300 E Street SW, Washington. NASA TV will broadcast the briefing live with two-way media question-and-answer capability from participating agency centers. Panelists will discuss preparations to accomplish the challenging Mars landings. Panelists: Dr. Ed Weiler, NASA associate administrator for space science, NASA Headquarters Dr. Charles Elachi, director, Jet Propulsion Laboratory (JPL), Pasadena, Calif. Peter Theisinger, Mars Exploration Rover project manager, JPL Dr. Cathy Weitz, Mars Exploration Rover (MER) program scientist, NASA Headquarters Dr. Steve Squyres, MER principal investigator, Cornell University, Ithaca, N.Y. Dr. Joy Crisp, Mars Exploration Rover project scientist, JPL NASA Television is available on AMC-9, transponder 9C, C-Band, located at 85 degrees west longitude. The frequency is 3880.0 MHz. Polarization is vertical, and audio is monaural at 6.80 MHz.For more information about NASA, on the Internet, visit: http://www.nasa.gov For information about the Mars Exploration Rovers on the Internet, visit: http://mars.jpl.nasa.gov/mer -end-