The most practical scenario for food production on off-world sites (i.e., Moon and Mars), incorporate the continuous resupply of long storage-life, high density staple crops and the on-site production of additional nutritionally rich vegetables, leafy greens, fruiting and medicinal crops. Together, combining high-density, long storage-life staples supplemented with fresh, edible crops will provide necessary nutrients, while also enhancing dietary variety. Anecdotal evidence also supports the psychological benefits for astronauts of growing crops, rooted in the enjoyment of eating and caring for plants. Highlighting the need not to forget the numerous herbs and spices, leafy greens, and fruiting crops that make any meal into a ‘five-star ’experience. Two different types of growout modules have been constructed by students at the University of Alabama, Huntsville designed to operate as flow through media bed. The first is a traditional continuous flow media bed (2 @ 3 ft x 6 ft) and the second, six vertical tower systems, reflecting what NASA has pictured for a Mars colony. Using these two systems, a wide variety of research is being conducted on multiple crops looking at the best crops to grow, how to maximize productivity per volume, what environmental parameters are most important, what crops can be grown together and other growout issues. In addition, this research project has been recognized with a small grant from the Alabama Space Grant Consortium (NASA). Finally, design and construction details will be available via social media and web pages to help encourage and support school STEM Projects and ‘citizen-scientist’.
Ebeling et al. (Wed,) studied this question.