NASA Announcement: Release of an Announcement of Opportunity for NASA Heliophysics Explorers Program 2019 Medium-Class Explorer (MIDEX) Missions

Agency: National Aeronautics and Space Administration
State: Maryland
Type of Government: Federal
FSC Category:
  • A - Research and development
Posted Date: Jul 2, 2019
Due Date: Sep 30, 2019
Solicitation No: NNH19ZDA013O
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Opportunity History
  • Original Synopsis
    Jul 02, 2019
    10:38 am
Solicitation Number :
Notice Type :
Combined Synopsis/Solicitation
Synopsis :
Added: Jul 02, 2019 10:38 am

On or after July 2, 2019, the National Aeronautics and Space Administration (NASA) Science Mission Directorate (SMD) released an Announcement of Opportunity (AO) entitled: Announcement of Opportunity (AO) for 2019 Heliophysics Medium-Class Explorer (MIDEX) missions. This FBO notice announces that the full text of the 2019 MIDEX AO is available at: by searching on NNH19ZDA013O.

The release of the 2019 Heliophysics MIDEX AO was delayed due to the 35-day partial U.S. Government shutdown. Since this is an FBO synopsis notice, it is not a complete or verbatim summary of the 2019 Heliophysics MIDEX AO and any appendices or, if necessary, future amendments or clarifications. It is necessary to visit the NASA Solicitation and Proposal Integrated Review and Evaluation System (NSPIRES), the official NASA source for the 2019 Heliophysics MIDEX AO, and download a full and complete copy.

The Heliophysics Explorers Program conducts Principal Investigator (PI)-led space science investigations under a not-to-exceed cost cap. Heliophysics Explorers Program investigations must address NASA's heliophysics science objectives as described in 2018 NASA Strategic Plan and the 2014 NASA Science Plan.

It is anticipated that no more than three 2019 Heliophysics MIDEX investigations will be selected for 9-month, $1.25M (FY19) Phase A concept studies through the AO. At the conclusion of the concept studies, it is expected that at least one MIDEX investigation will be down-selected to continue into Phase B and subsequent mission phases. Multiple missions may be down-selected if their total cost remains below the AO cost cap.

Due to the 2018 Heliophysics Science Mission of Opportunity Program Element Appendix to the SALMON-3 AO, there are no heliophysics Missions of Opportunity (MO) solicited as part of this AO. Furthermore, the MO associated with this Midex AO was released October 2018 as a Heliophysics Program Element Appendix M to the SALMON-3 or the Third Stand Alone Mission of Opportunity Notice.

NASA recognizes and supports the benefits of having diverse and inclusive scientific, engineering, and technology communities and fully expects that such values will be reflected in the composition of all proposal teams as well as peer review panels (science, engineering, and technology), science definition teams, and mission and instrument teams.

Foreign contributions to science instruments should not exceed approximately one-third of the science payload. Proposals shall include a discussion of the scale of the internationally-contributed instruments, how the proposed contribution is consistent with NASA's policy that the contribution does not exceed approximately one-third of the science payload, and how the programmatic risks associated with the contribution will be handled.

Launch Vehicle costs and procurement will be the responsibility of NASA. Launch vehicle standard services will be provided as Government Furnished Equipment (GFE), so the cost will not be included in the PI-Managed Mission Cost (PIMMC). The cost of mission-specific and special launch services is the responsibility of the PI and must be included within the proposed PIMMC.

The 2019 Heliophysics MIDEX AO is based on the Standard PI-led Mission AO Template version 5.0 available at All proposers must read this AO carefully, and all proposals must comply with the requirements, constraints, and guidelines contained within the AO.

Proposers are encouraged to send comments and questions early so that they may be addressed at the Preproposal Conference planned for July 23, 2019; this date, however, may change. The forthcoming agenda, logistical information, and confirmation of the date for this session are found on the Acquisition Homepage at The period for questions/comments will close fourteen (14) days before the proposal due date, and the period for responses will close ten (10) days before the proposal due date.

Responses to comments/questions will be posted on the website of the Science Office for Mission Assessments (SOMA) of NASA Langley Research Center (LaRC) at on the 2019 Heliophysics MIDEX Acquisition Pages. Anonymity of persons/institutions who submit comments will be preserved.

Confirm the following submission dates by visiting and downloading a full and complete copy of solicitation NNH19ZDA013O:

A mandatory Notice of Intent (NOI) to propose is due August 2, 2019, 11:59 pm Eastern. The Electronic Proposal Submittal Deadline is September 30, 2019, 11:59 p.m. Eastern. Letters of Commitment are Due with the Proposal at September 30, 2019, 11:59 p.m. Eastern. The Deadline for Receipt of Proposal on CD-ROMs or DVD-ROMs is October 4, 2019, 4:30 p.m. Eastern

Comments/Questions will be accepted by email only with the subject line to read "2019 Heliophysics MIDEX" addressed to Dr. Moses is the Heliophysics Explorers Program Lead Scientist.

In the event of any Federal Government funding lapses that impact NASA operations, proposers should visit NSPIRES. The issuance of a 2019 Heliophysics MIDEX AO does not obligate NASA to issue awards through the this AO. Any costs incurred by prospective investigators in preparing submissions in response to this solicitation are incurred completely at the submitter's own risk.

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Internet Address
Other (Draft RFPs/RFIs, Responses to Questions, etc..)
Internet Address
Posted Date:
July 2, 2019{CE94D9F1-858E-F22E-513F-8DF6F389B4AF}&path=&method=init
Description: Internet Address
Contracting Office Address :
NASA/Goddard Space Flight Center, NASA Headquarters Acquisition Branch, Code 210.H
Greenbelt, Maryland 20771
United States
Primary Point of Contact. :
Dr. Dan Moses ,
2019 Heliophysics Explorers Program Lead Scientist, Science Mission Directorate
All Files
Internet Address
Jul 02, 2019
Internet Address
General Information
Notice Type:
Combined Synopsis/Solicitation
Posted Date:
July 2, 2019
Response Date:
Sep 30, 2019 11:59 pm Eastern
Archiving Policy:
Manual Archive
Archive Date:
Original Set Aside:
Set Aside:
Classification Code:
A -- Research & Development
541 -- Professional, Scientific, and Technical Services/54171 -- Research and Development in the Physical, Engineering, and Life SciencesT

Related Document

Jul 23, 2019[Combined Synopsis/Solicitation] NASA Announcement: Release of Amendment #1 to the Announcement of Opportunity for NASA Heliophysics Explorers Program 2019 Medium-Class Explorer (MIDEX)

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