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Earth Venture Instrument-6 (EVI-6)

Earth Venture Instrument - 6 Latest News

DRAFT Solicitation for Earth Venture Instrument-6 (EVI-6) Investigations;

Program Element Appendix (PEA) Letter TBD of the Third Stand Alone Missions of Opportunity Notice (SALMON-3) Released

This summary email announces that NASA's Science Mission Directorate (SMD) is releasing a Draft Program Element Appendix (PEA) Letter TBD to the Third Stand Alone Missions of Opportunity Notice (SALMON-3) Announcement of Opportunity (AO). The Draft PEA is entitled "Earth Venture Instrument-6 (EVI-6)." This is draft solicitation number NNH22ZDA005J.

Proposers must adhere to the requirements and constraints of the PEA and the SALMON-3 AO. The full Draft PEA text can be found on the NASA Solicitation and Proposal Integrated Review and Evaluation System (NSPIRES) at short URL:, or by searching Solicitations using "Draft Earth Venture Instrument-6" or "NNH22ZDA005J" at NSPIRES is the official source for this PEA and for other information in the event of a lapse in NASA operations.

The draft PEA is the sixth solicitation in the EVI series. EVI-6 will solicit proposals for complete PI-led science investigations (Phases A through F) that are based on one or more (a) Class D space-based instruments or (b) Class D CubeSats. The selected EVI-6 investigations will conduct innovative research that addresses pressing Earth system science questions.

The Cost Cap on the PI-Managed Mission Cost (PIMMC) for an EVI-6 investigation estimate is $37M in Fiscal Year 2024 dollars with a possibility of an additional request of up to $5.3M for a Science Enhancement Option (SEO). NASA expects to select one or more Class D Instrument and/or Class D CubeSat Investigations based on funding availability at the time of selection. NASA is committed to principles of open science for EVI-6, including the full, free, and open sharing of data, algorithms, software, and documentation from project initiation.

The differences between this draft EVI-6 and the previous EVI-5 solicitation include the following:

  1. ) NASA Procedural Requirements NPR 7120.5F entitled "NASA Space Flight Program and Project Management Requirements" is applicable
  2. ) Simplifies some past proposal requirements to reduce workload on proposers
  3. ) Adds a requirement to follow the NASA Earth Science Division Open Source Science Policy
  4. ) Adds a Project Protection Plan
  5. ) Adds a Diversity and Inclusion Plan
  6. ) Adds an applications component to the evaluation criteria
  7. ) Provides for an optional NOAA Operational Enhancement Opportunity
  8. ) Allows, with some restrictions, the PI's to use text, tables, and figures when responding to NASA about the Potential Major Weaknesses (PMW) identified by the review panels. NOTE: These PMW responses become an integral part of the proposal evaluation process.

Within four years of project initiation, each selected EVI-6 investigation is required to deliver either (1) one or more instruments to be integrated onto a NASA-determined platform or (2) one or more CubeSats, having a maximum of 12U each, that can be integrated onto a NASA-determined launch vehicle. NASA is responsible for identifying feasible platforms and/or launch vehicles.

Proposers and other interested parties are asked to read the Draft EVI-6 PEA and provide feedback for NASA's consideration. The comment period for the Draft EVI-6 PEA ends on December 1, 2021.

NASA has not approved the issuance of the Final EVI-6 PEA, and this notification does not obligate NASA to issue the PEA and solicit proposals. Any costs incurred by prospective investigators in preparing submissions in response to this Draft EVI-6 PEA are incurred completely at the submitter's own risk. The Final PEA may differ significantly from this Draft PEA.

The time frame for the solicitation is estimated to be:

Release of Draft EVI-6 PEA .............................. October 26, 2021
Prospective Bidders Web Conference .............. November 12, 2021 (1:00 3:00 p.m. Eastern Time)
Comment Period Closes.................................... December 1, 2021 (11:59 p.m. Eastern Time)
Release of Final EVI-6 PEA .............................. January-February 2022 (target)
Preproposal Web Conference ........................... ~2 to 3 weeks after Final PEA release
Mandatory Notice of Intent deadline ................. ~5 weeks after Final PEA release (11:59 p.m. Eastern Time)
Proposal deadline ............................................. ~3 to 4 months after Final PEA release (11:59 p.m. Eastern Time)

Download and carefully read the full Draft EVI-6 solicitation before emailing comments or questions. Further information will be posted on the EVI-6 Acquisition Homepage at as it becomes available. Individuals should consult existing EVI-6 questions and answers at in case a clarification has already been provided.

Questions and other comments on the Draft EVI-6 PEA may be addressed to Dr. Hank Margolis, EVI-6 Program Scientist, at with the subject line "EVI-6 Draft PEA." Questions and Answers will be posted on the EVI-6 Q&As section of the EVI-6 Acquisition Homepage. Anonymity of the authors of all questions will be preserved.