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[PS] Liquid Water on Mars! Really for Real This Time (Probably)
On Jul/27/2018 at 6:37 AM, Jeff Findley wrote :
In article , says... Planetary Society Blog /////////////////////////////////////////// Liquid Water on Mars! Really for Real This Time (Probably) Posted: 25 Jul 2018 09:11 AM PDT http://www.planetary.org/blogs/emily...rs-really.html A radar instrument on one of the oldest operational Mars orbiters has discovered possible evidence of present-day liquid water on Mars. This is really big news. We really, really need to explore this area to determine how much water is there and how easy it is to get to. Water means air to breathe and rocket fuel (CO2 from the atmosphere plus H2O gives you liquid methane and liquid oxygen). I agree with you that this is big news, but not for the same reasons. In my opinion it is interesting for the possibility to find life in there. For rocket fuel, mining the ice caps is probably an easier way to get large amounts of water. For an initial base needing smaller amounts of water (but still many many tonnes), extracting water from the small amounts of moister in the air should be easier. There are many means to make rocket fuel, on Mars. But finding life that has originated independently from the life on Earth would be one of the biggest scientific discoveries of all time, maybe even the biggest. Alain Fournier |
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[PS] Liquid Water on Mars! Really for Real This Time (Probably)
On Jul/31/2018 at 8:59 AM, Jeff Findley wrote :
In article , says... On Jul/27/2018 at 6:37 AM, Jeff Findley wrote : In article , says... Planetary Society Blog /////////////////////////////////////////// Liquid Water on Mars! Really for Real This Time (Probably) Posted: 25 Jul 2018 09:11 AM PDT http://www.planetary.org/blogs/emily...rs-really.html A radar instrument on one of the oldest operational Mars orbiters has discovered possible evidence of present-day liquid water on Mars. This is really big news. We really, really need to explore this area to determine how much water is there and how easy it is to get to. Water means air to breathe and rocket fuel (CO2 from the atmosphere plus H2O gives you liquid methane and liquid oxygen). I agree with you that this is big news, but not for the same reasons. In my opinion it is interesting for the possibility to find life in there. For rocket fuel, mining the ice caps is probably an easier way to get large amounts of water. For an initial base needing smaller amounts of water (but still many many tonnes), extracting water from the small amounts of moister in the air should be easier. There are many means to make rocket fuel, on Mars. But finding life that has originated independently from the life on Earth would be one of the biggest scientific discoveries of all time, maybe even the biggest. Clearly we'll be looking for any signs of life during any mission to Mars. That's a given. But until we have definitive proof that there is life, I'm going with the assumption that any life that was there is long gone. The exception being that there might be single cell organisms in any areas that actually do have liquid water. That is also the way I see it. In fact I'm going with the assumption that there never was any life. But I would really like to know whether that assumption is true or not. And if there is or was any life, I would like to know whether it was transported from one planet to another by hitch hiking on a rock ejected from one of the planets. But if we can prove that life arose on Mars independently from Earth, that is really really very interesting. Alain Fournier |
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