New research suggests that life may be hard to come by on certain classes of planets even if they are in the habitable zone since they will lose their water early on. See here. This is noteworthy in that in in the last few years almost all other research has pointed towards astronomical considerations not being a major part of the Great Filter, and this is a suggestion that slightly more of the Filter may be in our past.
New research suggests that life may be hard to come by on certain classes of planets even if they are in the habitable zone since they will lose their water early on. See here. This is noteworthy in that in in the last few years almost all other research has pointed towards astronomical considerations not being a major part of the Great Filter, and this is a suggestion that slightly more of the Filter may be in our past.