If we all were dead would it then be a "now" ? Lets say, hopefully as a hypotetical example only, that due to a nuclear disaster or a war, all humans and all life were dead. There were no life left on earth. Would it then be left a "now", and would time be passing as it does for us now ? Lets say there were some life somwhere in the outher space with those small little green men, that desided to visit the planet. When they arrived, at what time would they arrive, would they arrive in 1853, 200 years bfc or in the year 3059 ? If those persons that arrived from the outher space, is it for sure that those green men would be present in the same "now" as we would be. Eventuelly, why would they not be present in some "future now" or some "past now". Why is it likely to believe that the time dimention for those small green men would be the equal as for humans, if they were living. Is there only one time dimension and only one "present now" ? Eventually, why is it like that ? What about an insect that live for just some hours will it have the same time dimention as us humans ? (And they are not from the outher space, they live together with us.) Could life in some way be connected to existence in time ? When people argue about that there is a huge number of planets that might have wather, carbon, oxygen, etc, so there is likely to expect that there is life somewhere in space, is it then any good arguments to claim that the right mixture of water, carbon and oxygen will lead to the existense of time, as we now it, or in some other "usable" time dimension ? Is there any good arguments to claim that to be as a human or some other "living thing" is not connected to do some existence in time ? Is there any good arguments to claim that there is only one way to be connected to time, and that any dead or living "thing" will be connected to the same "now" and the same time dimention as we are ?