ROSES25: B.2 Heliophysics Foundational Research

NOTICE: Amended July 24, 2026. This amendment announces the Step-2 due date for this program element, which was previously TBD, is now September 25, 2026. Step-2 proposals can only be submitted by those who submitted a Step-1 proposal and were invited to submit a Step-2. Also, the requirements for Biographical Sketches and Current and Pending Support have been updated, see the table of Requirements for Expertise and Resources Not Anonymized (E&R) Document on page 11 in Section 3.2. New text is in bold.

NOTICE: Research security training required starting August 5, 2026. All PIs and any Co-Is that would spend ≥ 10% time on a proposed grants or cooperative agreements must certify they have taken research security training. NASA will be satisfied with the four online research security training modules on the National Science Foundation's (NSF) Research Security Training website at https://www.nsf.gov/research-security/training or the SECURE Center condensed version of the four modules at https://www.secure-center.org/ctm

NOTICE: Amended February 11, 2026. This amendment makes two corrections to this program element: The length of the Step-1 Proposal in Section 3.3.1 has been corrected from two pages to three, and the expected budget numbers given in the summary table are per award, per year, not the budget for all of the new awards in the SST.

NOTICE: Amended February 3, 2026. This amendment releases the final text for this program element, which was previously TBD. Step-1 proposals are due May 1, 2026. The Step-2 due date will be announced at least 60 days before the Step-2 proposal due date, see Section 3.1.

Trimmed here, the full scope, expected outcomes and award criteria are on the official topic page ↗.