DRAFT Announcement of Opportunity: 2023 Astrophysics Probe Explorer (APEX)

On or after the publication date of this SAM.gov notice, the full text for the DRAFT Announcement of Opportunity (AO) entitled “2023 Astrophysics Probe Explorer (APEX)” will be available for download from the NASA Solicitation and Proposal Integrated Review and Evaluation System (NSPIRES) at https://nspires.nasaprs.com by clicking on “Solicitation” and searching on NNH22ZDA015J or by using the direct link provided. In the event of any future lapses to the NASA operations, please visit NSPIRES, the official NASA source for the draft AO.This notice is not a complete nor verbatim summary of the draft AO. Open and carefully read the attached PDF file entitled “NNH22ZDA015JSynopsis.”  The attached PDF file is a copy of an email to be sent via NSPIRES to Science Mission Directorate List Serv subscribers.  After downloading from NSPIRES and reading the full announcement,  please address questions (or other comments) by email only with a subject line to read "APEX DRAFT AO" to the listed primary point of