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From the notice

This program element does not have a proposal due date. Proposals may be submitted at any time, pending certain eligibility timing issues related to resubmissions and duplicate proposal avoidance, see the program element text and appropriate overview appendix (e.g., B.1 or C.1). The date shown of 8/1/2026 is the last day that proposals may be submitted subject to the ROSES-25 rules and the current GCAM. The ROSES-26 version of this program element is planned to overlap with this ROSES-25 version by a few weeks, allowing continuous submission of proposals across ROSES years. NOTICE: Updated July 21, 2026. The Anticipated Award Start Date for last submissions in Table C.2-1 in Section 3.1 has been updated. The requirements for Biographical Sketches and Current and Pending Support in Section 3.5 have been updated, as have the Expected program budget for first year of new awards and Number of new awards pending adequate proposals of merit in Section 6. New text is in bold and deleted text is struck through. 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

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