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

Canonical: https://abierto.us/opportunities/xrisdrfp80gsfc26r7004

- Solicitation number: XRIS-DRFP-80GSFC26R7004
- Notice type: Sources sought
- Status: Closed. Deadline was February 18, 2026 at 5:00 PM EST
- Department: National Aeronautics and Space Administration
- Contracting office: NASA Goddard Space Flight Center (80GSFC)
- NAICS: 336414 Guided Missile and Space Vehicle Manufacturing
- Product or service code: AR15 Space R&D Svcs; Space Flight, Research & Supporting Activities; R&D Facilities & Maj Equip
- First posted: February 4, 2026
- Last posted: February 4, 2026
- SAM.gov: https://sam.gov/workspace/contract/opp/32688d5d351d4e6dad918e95a05d7a6e/view

## Description

THIS IS NOT A REQUEST FOR PROPOSAL. NO PROPOSALS ARE TO BE SUBMITTED IN RESPONSE TO THIS NOTICE. This notice is issued by the NASA GSFC to post a Draft RFP to solicit responses from interested parties. This document is for information and planning purposes and to allow industry the opportunity to verify reasonableness and feasibility of the requirement, as well as promote competition. This Draft RFP is for the X-Ray Irradiance Sensor (XRIS) requirement.

The principal purpose of this requirement is to design, analyze, develop, and fabricate two (2) flight X-Ray Irradiance Sensors that will monitor X-ray flares that may cause changes in the Earth’s ionosphere. This presolicitation synopsis is not to be construed as a commitment by the Government, nor will the Government pay for the information submitted in response. The Government may not respond to questions/concerns submitted. The Government will use the information to finalize the RFP as necessary.

All comments or questions shall be submitted electronically via email to Daniel Han at Daniel.S.Han@nasa.gov no later than 5:00 PM Eastern Time on February 18, 2026. When responding, reference XRIS-DRFP-80GSFC26R7004. NASA Clause 1852.215-84, Ombudsman, is applicable. The Center Ombudsman for this acquisition can be found at: https://www.hq.nasa.gov/office/procurement/regs/Procurement-Ombuds-Comp-Advocate-Listing.pdf If a solicitation is released, then it and any additional documents will be available on SAM.gov.

It is the offeror's responsibility to monitor this website for the release of the solicitation and amendments (if any). Potential offerors will be responsible for downloading their own copy of the solicitation and amendments, if any. NASA intends to publicize a listing of respondents to facilitate teaming arrangements. Should your firm desire not to be included in this listing, clearly indicate this desire in your response.

## Publications

- February 4, 2026: Sources sought, due February 18, 2026 at 5:00 PM EST. Notice 32688d5d351d4e6dad918e95a05d7a6e. https://sam.gov/workspace/contract/opp/32688d5d351d4e6dad918e95a05d7a6e/view

## Points of contact

- Daniel Han, daniel.s.han@nasa.gov
- Suzanne Sierra, suzanne.k.sierra@nasa.gov

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Source: SAM.gov Contract Opportunities bulk extract. Confirm deadlines on SAM.gov before responding. Cite https://abierto.us/opportunities/xrisdrfp80gsfc26r7004.