AMENDMENT TO THE ANNOUNCEMENT OF OPPORTUNITY
AO 01-OSS-04 ENTITLED
"MARS EXPLORATION ROVER MISSION PARTICIPATING SCIENTIST PROGRAM"


An Amendment to this AO 01-OSS-04 will be released to replace wording in
Section 6.7.2 for Export Control Guidelines Applicable to Foreign Proposals
and Proposals Including Foreign Participation. This Amendment will be
available on or about
October 5, 2001, via the World Wide Web site http://spacescience.nasa.gov/
, link
through "Research Solicitations." Proposals are due December 5, 2001.

Additional information may be obtained from Dr. Catherine Weitz, MER
Program Scientist, Solar System Exploration Division, Code SE, Office of
Space Science, NASA Headquarters, Washington, DC 20546-0001;
E-mail: (cweitz@...); FAX: 202 358-3097.