Solicitation

Hydrosphere, Biosphere, & Geophysics (HBG) Support Services II - Final Request for Proposal (FRFP)

National Aeronautics and Space Administration

AI summaryNASA's Goddard Space Flight Center in Greenbelt, Maryland has posted its final request for proposals (FRFP) for Hydrosphere, Biosphere, and Geophysics (HBG) Support Services II: science research support for the Earth Sciences Division. The text says NASA will run it as a small business set-aside, though SAM.gov states none. It will be a hybrid indefinite-delivery, indefinite-quantity (IDIQ: orders placed as needed) contract with a five-year ordering period; the response due date is December 4, 2026, 2:00 PM Eastern. More in the summary

A newer version of this notice was posted Oct 26, 2026. See the latest version.

AI summary Beta

Written by AI from the notice text. Check dates on SAM.gov.

Summary of the version posted Oct 21, 2026. The notice was amended Oct 26, 2026. Check what else changed on SAM.gov. Some details are in the notice's attachments, which this summary didn't read. Check the attachments on SAM.gov.

NASA's Goddard Space Flight Center in Greenbelt, Maryland has posted its final request for proposals (FRFP) for Hydrosphere, Biosphere, and Geophysics (HBG) Support Services II: science research support for the Earth Sciences Division. The text says NASA will run it as a small business set-aside, though SAM.gov states none. It will be a hybrid indefinite-delivery, indefinite-quantity (IDIQ: orders placed as needed) contract with a five-year ordering period; the response due date is December 4, 2026, 2:00 PM Eastern.

Who can bid

Small business (per the notice text; SAM.gov states no set-aside)

Things to watch

Serious: Set-aside differs between SAM.gov and the text. SAM.gov states no set-aside, but the text says it is a small business set-aside; confirm with the contracting officer before relying on either.
Worth checking: Contract structure changed from the draft. The draft was an IDIQ with cost-plus-fixed-fee orders only; the final adds firm-fixed-price orders, so earlier pricing plans may not fit.
Minor: Cost-type orders need cost accounting. Cost-plus-fixed-fee task orders are paid on costs incurred, which usually requires an accounting system that tracks costs by order.

Read from the notice text only.

Full summary

What they want

Science research support across the Cryospheric Sciences, Ocean Ecology, Hydrological Sciences, Biospheric Sciences, and Geodesy and Geophysics Laboratories
Science, research and computing support for the Terrestrial Information Systems Laboratory (TISL)
Research that develops and applies space, airborne, in situ (on-site) and laboratory technologies and observations
Topics include water resources, land and ocean ecosystems, sea level change, the cryosphere (ice and snow), gravity and magnetic fields, solid Earth and the terrestrial reference frame
Work is described in the Statement of Work, Attachment A

Contract type: Hybrid indefinite-delivery, indefinite-quantity (IDIQ) contract with cost-plus-fixed-fee (CPFF: the Government pays costs plus a set fee) and firm-fixed-price (FFP: one set price) task orders
Period of performance: Five-year ordering period from the contract effective date
Place of performance: Greenbelt, MD, USA
Estimated value: Not stated
Offers due: December 4, 2026, 2:00 PM Eastern (from the version posted Oct 21, 2026; amended since)

What to include when you submit

Follow the proposal submission instructions in the solicitation and its attachments; the cover letter gives more information

Not in the notice text

The solicitation, Statement of Work (Attachment A) and cover letter are attachments that were not read; proposal instructions, page limits and evaluation factors are there.
The size standard and whether this is a small business set-aside should be confirmed in the solicitation.
No estimated contract value or task order sizes are given.
Security, staffing and facility requirements are not stated in the text.

Eligibility and how to respond

No set-aside: any business, large or small, can bid unless the notice says otherwise.
How and where to submit is in the notice text and its attachments on SAM.gov.

Notice details

Posted: Oct 21, 2026
Notice type: Solicitation
Office: NASA Goddard Space Flight Center, Greenbelt, MD
Product/service code: AJ11 · General Science and Technology R&D Services; General Science and Technology; Basic Research
Business type: Engineering, architecture & research (FedReady's grouping, from NAICS 541715)
Versions: 3 versions have been posted, newest first.
Oct 26, 2026 · Amendment 0002Due Dec 4, 2026
Oct 22, 2026 · Amendment 0001Due Dec 4, 2026
Oct 21, 2026 · Solicitation (this version)Due Dec 4, 2026
Attachments: Checking SAM.gov for this notice's files…
See attachments on SAM.gov

Past awards and competition

Who has won work like this before, the likely incumbent, and what similar contracts paid, from USAspending.gov.

Before you respond

Terms on this notice: Solicitation

Full notice text from SAM.gov

UPDATE #1 – Amendment #0001 to the RFP was released on October 22, 2026. UPDATE #2 – Amendment #0002 to the RFP was released on October 26, 2026. The National Aeronautics and Space Administration (NASA), Goddard Space Flight Center (GSFC), hereby invites interested parties to review the Final Request for Proposal (FRFP) for the Hydrosphere, Biosphere, and Geophysics (HBG) Support Services II requirement supporting the Earth Sciences Division (ESD) at NASA/GSFC. The principal purpose of this requirement is to provide science research that conceives, develops, and applies space, field-deployed (i.e. airborne and in situ) and laboratory based technologies and observations to address issues of importance to society. These include but are not limited to water resources, land and ocean ecosystems, global and regional sea level change, changes in the Earth’s cryosphere, gravity field, magnetic field, solid Earth, and the terrestrial reference frame. The Statement of Work, Attachment A, describes the scope of the requirement. This contract is for support of a full range of science and research activities across the breadth of the various Laboratories that make up the HBG sub-division: the Cryospheric Sciences, Ocean Ecology, Hydrological Sciences, Biospheric Sciences, and Geodesy and Geophysics Laboratories. This contract is also for support of science, research and computing activities within the Terrestrial Information Systems Laboratory (TISL), also in the ESD. For the purposes of this document and contract the term HBG will be used to encompass all the Laboratories of the HBG sub-division and the TISL. NASA will conduct this acquisition as a small business set-aside. This competitive acquisition was originally contemplated as a Cost-Plus-Fixed-Fee (CPFF), Indefinite-Delivery/Indefinite-Quantity (IDIQ) contract with the ability to issue CPFF task orders. Following further acquisition planning and assessment of the Government's requirements, the contract structure has been modified. The HBG II Draft Request for Proposal (DRFP) posted on April 8, 2025 was issued as an IDIQ CPFF solicitation. As amended, this competitive acquisition will now result in a HYBRID Indefinite Delivery Indefinite Quantity (IDIQ) with the ability to issue Cost Plus Fixed Fee (CPFF) AND Firm- Fixed Price (FFP) task orders. The contract will have an effective ordering period of five years from the contract effective date. Interested offerors are encouraged to review the solicitation and all associated attachments for complete details regarding the requirements and proposal submission instructions. Please see the attached cover letter for additional information.

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