2023 Astrophysics Probe

2023 Astrophysics Probe COMMUNITY ANNOUNCEMENTS

• Astrophysics Probe Explorers AO NSPIRES release letter for solicitation NNH23ZDA021O released July 31, 2023. [Review/Download]
• Astrophysics Probe Announcement of Opportunity Third Community Announcement NNH22ZDA008L released (May 10, 2023). [Review/Download]
• Astrophysics Probe Explorer (APEX) AO Community Announcement release of draft solicitation (08/16/2022). [Review/Download]
• Astrophysics Probe Announcement of Opportunity Second Community Announcement NNH22ZDA008L released (May 19, 2022). [Review/Download]
• Astrophysics Probe Announcement of Opportunity Community Announcement NNH22ZDA008L released (January 11, 2022). [Review/Download]

AP PROBE Announcements

• Community Announcements
• Draft AO
• Final AO
• Program Library
• Step 1 Evaluation Plan (Eval completed 10/3/2024)
• Step 2 Evaluation Plan (baselined 06/30/2025)
• Step 1 Q&A (updated 2/16/2024)
• Concept Study Step 2 Q&A (updated 08/22/2025)
• SAM Announcement
• Teaming Interest
• Concept Study Kickoff & PI Masters Forum
• Pre-Proposal Conference