Panspermia just kicks the can down the road. It does not explain the origins of life, but rather how life got here and flourished. If the universe were eternal and stationary, what Fred Hoyle thought, then it would just be a part of this eternal recurrence of things. The big bang puts a past time limit on things. So some where life got going.
LC On Saturday, July 6, 2019 at 5:43:17 PM UTC-5, smitra wrote: > > Although there is an element of panspermia in this proposal, as I > explain in the conclusion, the panspermia element is a side issue as I > need to explain how something cooked up in space ends up on Earth. The > main problem to be solved is how to get from building blocks to > machines. The problem has actually little to do with biochemistry, it's > a mathematical problem because you would always stumble on that problem > in any model of artificial chemistry. The solution is percolation in 3 > dimensions to get from building blocks to a large number of > micro-environments with features in the interior that can act as > catalysts. Each micro-environment breaks symmetries in different ways, > some are are better than others for harboring an RNA world than others. > > > > > On 06-07-2019 20:11, spudboy100 via Everything List wrote: > > Panspermia for sure. Did it work that way in the universe? Maybe. I am > > guessing we'd require a close-by stellar activity place where life all > > started, and thus, floomed it's way to a hungry earth? My suspicion > > would be if we'd see life on the other planets in our solar system, > > your reasoning would be spot-on! Since life appears sketchy around > > these parts, I am no enthusiast of panspermia. It made for a great > > tale in Stephen Baxter's Evolution (2002), and one of Larry Niven's > > short tales however. (The Green Marauder). > > > > -----Original Message----- > > From: smitra <smi...@zonnet.nl <javascript:>> > > To: everything-list <everyth...@googlegroups.com <javascript:>> > > Sent: Sat, Jul 6, 2019 11:32 am > > Subject: Re: The origin of life has not been explained > > > > https://arxiv.org/abs/1711.01945 [1] > > > > A followup article which focuses more on the mathematical issues is > > under construction, the key points are: > > > > 1) In interstellar space, simple organic compounds captured in small > > ice > > grains were subject to UV radiation and occasional heating due to > > incident cosmic rays (CR). This induced a bond percolation process > > that > > led to large clusters of organic molecules on a time scale of $gtrsim > > 10^6$ years. > > > > 2) On a proto-planet, such clusters can merge into loosely bound > > superclusters. The deep interior of such superclusters can provide for > > > > chemical micro-environments in which conventional models of > > abiogenesis > > driven by cold-warm cycles can be considered. > > > > 3) Rapid fluctuations in the chemical potentials of certain chemical > > compounds that can penetrate the supercluster, will be damped down. > > Long > > term gradual and periodic changes then dominate, allowing any > > biochemical systems inside the superclusters to more easily evolve > > toward exploiting the conditions in their micro-environments, compared > > > > to a similar system in the outside environment. > > > > 4) As the supercluster breaks up, the system experiences more of the > > shorter term fluctuations that has more of a random character. The > > system can then evolve to adapt to these fluctuations, when doing so > > right from the start might not have worked. > > > > 5) On a small fraction of the superclusters these processes led to > > microbes capable of surviving in the outside environment. > > > > 6) Microbes were transferred to Earth via a collision of a > > microbe-containing proto-planet with the Moon. Fragments containing > > microbes resulting from the giant impact rained down on the Earth. > > > > Saibal > > > > On 06-07-2019 10:48, 'Cosmin Visan' via Everything List wrote: > >> https://www.youtube.com/watch?v=r4sP1E1Jd_Y [2][1] > >> > >> -- > >> You received this message because you are subscribed to the Google > >> Groups "Everything List" group. > >> To unsubscribe from this group and stop receiving emails from it, > >> send an email to everyth...@googlegroups.com <javascript:>. > >> To view this discussion on the web visit > >> > > > https://groups.google.com/d/msgid/everything-list/a43531f9-d34c-4806-97f0-7665befc7e95%40googlegroups.com > > > [3] > >> [2]. > >> > >> > >> Links: > >> ------ > >> [1] > >> > > > https://www.youtube.com/watch?v=r4sP1E1Jd_Y&fbclid=IwAR03cRVkBTOeYnPldcuLzFGCNiWqCR0dE5FENXF9JJtRlk75sbq5Dh2wxcY > > > [4] > >> [2] > >> > > > https://groups.google.com/d/msgid/everything-list/a43531f9-d34c-4806-97f0-7665befc7e95%40googlegroups.com?utm_medium=email&utm_source=footer > > > [5] > > > > -- > > You received this message because you are subscribed to the Google > > Groups "Everything List" group. > > To unsubscribe from this group and stop receiving emails from it, send > > an email to everyth...@googlegroups.com <javascript:>. > > To view this discussion on the web visit > > > https://groups.google.com/d/msgid/everything-list/d3e4b4989f9989d42135d2106294e71e%40zonnet.nl. > > > > > > > > -- > > You received this message because you are subscribed to the Google > > Groups "Everything List" group. > > To unsubscribe from this group and stop receiving emails from it, > > send an email to everyth...@googlegroups.com <javascript:>. > > To view this discussion on the web visit > > > https://groups.google.com/d/msgid/everything-list/272321496.3596453.1562436694561%40mail.yahoo.com > > > [6]. > > > > > > Links: > > ------ > > [1] https://arxiv.org/abs/1711.01945 > > [2] https://www.youtube.com/watch?v=r4sP1E1Jd_Y > > [3] > > > https://groups.google.com/d/msgid/everything-list/a43531f9-d34c-4806-97f0-7665befc7e95%40googlegroups.com > > > [4] > > > https://www.youtube.com/watch?v=r4sP1E1Jd_Y&fbclid=IwAR03cRVkBTOeYnPldcuLzFGCNiWqCR0dE5FENXF9JJtRlk75sbq5Dh2wxcY > > > [5] > > > https://groups.google.com/d/msgid/everything-list/a43531f9-d34c-4806-97f0-7665befc7e95%40googlegroups.com?utm_medium=email&utm_source=footer > > > [6] > > > https://groups.google.com/d/msgid/everything-list/272321496.3596453.1562436694561%40mail.yahoo.com?utm_medium=email&utm_source=footer > > > -- You received this message because you are subscribed to the Google Groups "Everything List" group. 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