6 Life on Mars Discussion of evidence for past and present life on Mars as well as methods of detection. No "image artifact" discussion. (Moderated by IanM, kbd512, RobertDyck, SpaceNut, tahanson43206) 177 1,904 2020-08-26 20:10:07 by SpaceNut

7 Water on Mars Was water present on the surface on Mars in the past, and in what quantities? Where is the water on Mars now? (Moderated by IanM, kbd512, RobertDyck, SpaceNut, tahanson43206) 121 1,360 Today 09:04:43 by tahanson43206