News Planetary Science Astronauts might be able to use asteroid soil to grow crops Lettuce, chili pepper and radish plants grew in mixtures of faux asteroid dirt and peat moss Astrobiologist Steven Russell holds a container of faux asteroid soil and peat moss, with a chili pepper seedling peeking through. Mike Hess/UND Today Share this:EmailFacebookTwitterPinterestPocketRedditPrint By Liz Kruesi July 29, 2022 at 7:00 am Astronauts might one day dine on salad grown in asteroid soil. Romaine lettuce, chili pepper and pink radish plants all grew in mixtures of peat moss and faux asteroid soil, researchers report in the July Planetary Science Journal.