Notices

• NOTICE: Clarified December 4, 2025. The rules regarding interagency awards described in Section 1.1.1 of B.1 Heliophysics Research Program Overview apply to this program element. Section 7 has been updated to reflect this. New text is in bold. The due dates are unchanged.
• NOTICE: Amended November 25, 2025. This amendment releases final text for this program element, which was previously TBD. Step-1 proposals are due January 21, 2026. The Step-2 due date will be announced at least 60 days before the Step-2 proposal due date, see Section 5.1.
• The description of the specific proposal opportunity on this page is contained in the document 'B.3 Living with a Star Science'. The document 'B.1 Heliophysics Research Program Overview' describes research activities within the NASA science division that is managing the specific proposal opportunity on this page and may impose requirements upon proposals submitted to this program element. The document 'Summary of Solicitation' describes the common requirements for all ROSES-2025 proposal opportunities. The document 'Table 1' contains the proposal check list from the Summary of Solicitation. The documents 'Table 2' and 'Table 3' contain the list of all proposal opportunities and their due dates, sorted by (full or Step-2) proposal due date or appendix number, respectively. All of these documents are kept up to date and incorporate amendments, clarifications, and corrections in a clearly identifiable manner.