6AugustEmail.pdf
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- Attached to
- 2026 Astrophysics Small Explorer (APSMEX)
- Solicitation number
- NNH26ZDA011O
About this file
This is an Announcement of Opportunity (AO) amendment notification for a federal space science research solicitation. The NASA Science Mission Directorate (SMD) has released Amendment #1 to the Astrophysics Explorers Program 2026 Small Explorer (SMEX) AO, which solicits Principal Investigator (PI)-led space science investigations. The solicitation number is NNH26ZDA011O, accessible via NSPIRES (NASA Solicitation and Proposal Integrated Review and Evaluation System) at https://nspires.nasaprs.com/ or https://go.nasa.gov/APSMEX26. The proposal due date remains September 9, 2026, with the Q&A period ending 14 days prior to submission. Changes to the AO text are marked with bold for new language and strikethrough for deletions, with a detailed summary of amendments available in the Amendment #1 document on the NSPIRES landing page.
Prospective proposers should direct all inquiries regarding the APSMEX26 solicitation to Dan Moses (Lead Program Scientist), Hannah Jang-Condell (Deputy Program Scientist), and Omar Torres (Lead Acquisition Manager), using the email subject line "APSMEX26" for proper routing. The official Question and Answers document has been updated on the Science Office for Mission Assessments (SOMA) website at https://explorers.larc.nasa.gov/APSMEX26/SMEX. All costs associated with proposal preparation are the sole responsibility of the submitter. In the event of a NASA operations lapse, proposers should refer to NSPIRES for updated information.
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Text version
The NSPIRES Email Subject: Astrophysics Explorers Program 2026 Small Explorer (SMEX)
AO Amended
Announcement of Opportunity Astrophysics Explorers Program 2026 Small Explorer
(SMEX) Amended Text Released
The National Aeronautics and Space Administration (NASA) Science Mission Directorate
(SMD) announces the release of Amendment #1 to the Announcement of Opportunity (AO) to solicit Principal Investigator (PI)-led space science investigations for the Small Explorer
(SMEX) opportunity under the Astrophysics Explorers Program on the NASA Solicitation and
Proposal Integrated Review and Evaluation System (NSPIRES). To find the full amended AO text and a copy of Amendment #1 visit https://nspires.nasaprs.com/, and select “Solicitations” at the top of the page, and on the next page in the search box, input the number
“NNH26ZDA011O” or use the direct short URL https://go.nasa.gov/APSMEX26. In the event of any lapse in NASA operations, please visit NSPIRES for further information.
Changes within the AO text are noted by using bold for new text and strikethrough for deleted text. The proposal due date, September 9, 2026, remains unchanged. For a summary of the changes made to the AO, locate the Amendment #1 document on the right side of the AO landing page on NSPIRES. Additionally, the official Question and Answers (Q&A) document has been updated on the Science Office for Mission Assessments (SOMA) web site at https://explorers.larc.nasa.gov/APSMEX26/SMEX.
All new questions or comments about the Astrophysics SMEX 2026 AO shall be addressed via email to Dan Moses, APSMEX26 Lead Program Scientist, dan.moses@nasa.gov; Hannah Jang-
Condell, APSMEX26 Deputy Program Scientist, hannah.jang-condell@nasa.gov; and Omar
Torres, Lead Acquisition Manager for the 2026 Astrophysics SMEX AO, SOMA omar.torres@nasa.gov using subject line “APSMEX26” to be properly routed. The Q&A period for the SMEX 2026 AO ends 14 days before the proposal due date.
Any costs incurred in preparing a submission in response to this notice or the full APSMEX26
AO are solely the responsibility of the submitter.
File details come from the government source that posted it. Updated .