PHASE A SUPPORT FOR THE GRAVITY AND EXTREME MAGNETISM SMALL EXPLORER (GEMS) SPACECRAFT DESIGN AND MISSION CONCEPT UNDER ANNOUNCEMENT OF OPPORTUNITY NNH07DA003O. THE CONTRACTOR WILL PROVIDE THE NECESSARY RESOURCES AND SKILLS TO PERFORM AND MANAGE THE TASKS DEFINED WITHIN THIS SOW FOR PHASE A. THE CONTRACTOR WILL PROVIDE TECHNICAL SUPPORT TO THE PHASE A CONCEPT STUDY REPORT (CSR) FOR THE EVOLVED AND REFINED GRAVITY AND EXTREME MAGNETISM SMALL EXPLORER (GEMS) SPACECRAFT DESIGN AND MISSION CONCEPT. OBJECTIVES OF THIS EFFORT INCLUDE, BUT ARE NOT LIMITED TO: PROGRAM MANAGEMENT FOR THE PHASE A CONTRACT CONDUCT AND SUPPORT SPACECRAFT PHASE A REVIEWS PHASE B/C/D/E PLANNING DEVELOP A SPACECRAFT WBS AND WBS DICTIONARY PREPARE INPUTS TO DETAILED SPACECRAFT PHASE B/C/D/E REQUIREMENTS REFINE SPACECRAFT SCHEDULE ESTIMATES PROVIDE SPACECRAFT PLANNING/SCHEDULE SUPPORT TO THE SMEX PROJECT ANALYSIS OF THE ACS PERFORMANCE GIVEN THE TELESCOPE OPTICAL BOOM, ROTATING SPACECRAFT, AND COUNTER-ROTATING SOLAR ARRAY SIMPLIFIED BENDING-MODE ANALYSIS OF THE BOOM-SPACECRAFT COMBINATION (INSTRUMENT MODEL SUPPLIED BY GOVERNMENT) REVIEW OF ALL OBSERVATORY TECHNICAL BUDGETS DEVELOPMENT OF OBSERVATORY ALIGNMENT CONCEPTS/PLANS TO THE LEVEL NECESSARY FOR MEETING THE CSR REQUIREMENTS AND INCORPORATION THEREIN PERFORM TIMING ANALYSIS TO DETERMINE IF A GPS RECEIVER IS REQUIRED DETERMINE LOCATION OF S-BAND ANTENNA OPTIMIZE SOLAR ARRAY DESIGN TO REDUCE TORQUE REQUIREMENTS AND JITTER SUPPORT DEVELOPMENT S/C TO INSTRUMENT INTERFACE AGREEMENT PERFORM SOLAR ARRAY SHADOWING ANALYSIS