A biologist's guide to Mars dirt

Below, we outline our current recipe for a soluble Mars Regolith Media (sMRM-Phx). With this recipe, we can determine whether or not microbes could rely on Mars dirt for key nutrients like nitrogen and phosphorous. We dive into where the data for this recipe comes from and what that implies for how certain we are of this recipe. Having a defined recipe will improve standardization across the astro-microbiology community and allow us to 🏆 benchmark organisms for Mars-readiness.