Planetary Protection is the practice of understanding and limiting terrestrial biological contamination of specific solar system bodies and stringently protecting Earth from possible life forms that could be returned from specific solar system bodies considered to be habitable. Numerous areas of research in astrobiology/exobiology are improving our understanding of the potential for survival of Earth microbes in extraterrestrial environments, relevant to preventing contamination of other bodies by Earth organisms carried on spacecraft.

The Due Date for Step 1 is April 12, 2021.

The Due Date for Proposals is May 13, 2021.