https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/441782Edit ImageSaveSaveEditCropCustom TextNASA Stennis Space Center visitor center and museum grows butterhead lettuce using an aeroponic process that involves no soil and advance LED lighting techniques. Original from NASA . Digitally enhanced by rawpixel.MorePublic DomainFree CCO U.S. Government image for Personal and Business useInfoView CC0 LicenseJPEGTIFFSmall JPEG 798 x 1200 px | 300 dpiLarge JPEG 1996 x 3000 px | 300 dpiTIFF 1996 x 3000 px | 300 dpi | 34.29 MBFree DownloadNASA Stennis Space Center visitor center and museum grows butterhead lettuce using an aeroponic process that involves no soil and advance LED lighting techniques. Original from NASA . Digitally enhanced by rawpixel.More