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A portion of the far side of the Moon looms large just beyond the Orion spacecraft in this image taken on the sixth day of the Artemis I mission by a camera on the tip of one of Orion’s solar arrays.

Unsolicited Proposal Submission

Guidebook

Guidebook for Proposers for the Preparation and Submission of Unsolicited Proposals

NASA encourages the submission of unique and innovative proposals that will further the Agency’s mission. While the vast majority of proposals are solicited via a publicly-available NASA Notice of Funding Opportunity (NOFO), a small number of unsolicited proposals that are not appropriate for submission in response to those NOFOs, and yet are still relevant to NASA, are reviewed and funded each year. NASA’s NOFOs are published on the NASA Solicitation and Proposal Integrated Review and Evaluation System (NSPIRES).

An astronaut mascot stands behind large red letters spelling out “NASA.”
NASA Glenn Research Center’s astronaut mascot stands behind the NASA logo exhibit during Discovery Days at Great Lakes Science Center in Cleveland on Friday, Sept. 12, 2025.
Credit: NASA/Lily Hammel