NASA/Goddard Space Flight Center, NASA Headquarters Acquisition Branch, Code 210.H, Greenbelt, MD 20771

A -- DRAFT ANNOUNCEMENT OF OPPORTUNITY FOR THE MEDIUM-CLASS EXPLORER (MIDEX) PROGRAM. SOL CBD-12-15-97 DUE 010998 POC John Lintott, Program Scientist, Phone (757) 864-9864, Fax (757) 864-8894, Email j.a.lintott@larc.nasa.gov WEB: Click here for the latest information about this notice, http://procurement.nasa.gov/EPS/HQ/date.html#CBD-12-15-97. E-MAIL: John Lintott, j.a.lintott@larc.nasa.gov. CBD SYNOPSIS) SPECIAL NOTICE TO COMMERCE BUSINESS DAILY (CBD) Release Date: December 15, 1997 Comment Due Date: January 9, 1998 DRAFT Announcement of Opportunity for the Medium-class Explorer (MIDEX) Program. The National Aeronautics and Space Administration (NASA), Office of Space Science (OSS), is releasing for community review and comment a DRAFT Announcement of Opportunity (AO) for the next missions in the Medium-class Explorer (MIDEX) Program. Selections of proposals through the final AO, once released, are intended to provide two mission launches by March 2004. A Mission of Opportunity may also be selected. The science objectives covered by the AO include those in the currently defined OSS science themes of the Astronomical Search for Origins and Planetary Systems, the Sun-Earth Connection, and the Structure and Evolution of the Universe. Refer to the OSS World Wide Web homepage at <http://www.hq.nasa.gov/office/oss/&;gt; for further information about these themes. Participation is open to all categories of organizations, foreign and domestic, including industry, educational institutions, nonprofit organization, NASA centers, and other Government agencies. NASA welcomes critical review and comment of this DRAFT AO and will be open from December 15, 1997, through January 9, 1998. Upon the release date, the full text of the AO and all appendices will be available electronically via the Word Wide Web address given above. Paper copies may be obtained by written request to Mr. John Lintott, Space Science Support Office, Mail Stop 160, NASA Langley Research Center, Hampton, VA 23681-0001; FAX: (757) 864-8894; or E-mail: <j.a.lintott@larc.nasa.gov>. The identity of those submitting comments will be held in confidence. This notice constitutes a NASA Research Announcement as contemplated in FAR 6.102(d)(2). (0321)

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