Draft Astrophysics Explorers Announcements of Opportunity

On or after the posting date of this beta.SAM synopsis, the draft text for the Announcements of Opportunity (AOs) entitled Draft 2021 Astrophysics Medium Explorer (MIDEX) Announcement of Opportunity (AO) NNH21ZDA004J and the Draft 2021 Astrophysics Explorers Missions of Opportunity (APEXMO) NNH21ZDA005J Program Element Appendix (PEA) for the Third Stand Alone Missions of Opportunity Notice (SALMON-3) AO may be downloaded from the NASA Solicitation and Proposal Integrated Review and Evaluation System (NSPIRES) https://nspires.nasaprs.com by searching on solicitation numbers “NNH21ZDA004J” or “NNH21ZDA005J” or by using the direct links attached. In the event of any future lapses to the NASA operations, AO respondents should visit NSPIRES, the official NASA source for these draft AOs. Open and carefully read the attached PDF file entitled “CombinedsynopsisandNSPIRESemail” for the detailed due dates, etc.