Space weather Observations at L1 to Advance Readiness (SOLAR) Series X-ray Irradiance Sensor (XRIS)

The National Aeronautics and Space Administration's Goddard Space Flight Center is releasing a Request for Proposal (RFP) for the X-ray Irradiance Sensor (XRIS) acquisition. The RFP is for the Space weather Observations at L1 to Advance Readiness (SOLAR) Series X-ray Irradiance Sensor (XRIS). • The RFP replaces the Draft RFP (Notice ID: XRIS-DRFP-80GSFC26R7004) issued on February 4, 2026. • All attachments to this posting together constitute the complete RFP, including all instructions, restrictions, provisions, and contract clauses. • The project involves the acquisition of an X-ray Irradiance Sensor (XRIS) for space weather observations.