This program element does not have a proposal due date. Proposals may be submitted at any time, pending certain eligibility timing issues related to resubmissions and duplicate proposal avoidance. For more information about programs with No Due Dates (NoDD) in PSD, visit:

The last day to submit proposals for the EXO22 ROSES-2022 cycle is March 29, 2023.

The goal of NASA’s Exobiology program (formerly Exobiology and Evolutionary Biology) is to understand the origin, evolution, distribution, and future of life in the Universe. Research is centered on the origin and early evolution of life, the potential of life to adapt to different environments, and the implications for life elsewhere. This research is conducted in the context of NASA’s ongoing exploration of our stellar neighborhood and the identification of biosignatures for in situ and remote sensing applications.