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> To: everything-list <everything-list@googlegroups.com> Sent: Sat, Jul 6, 2019 11:32 am Subject: Re: The origin of life has not been explained https://arxiv.org/abs/1711.01945 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 [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 everything-list+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/everything-list/a43531f9-d34c-4806-97f0-7665befc7e95%40googlegroups.com > [2]. > > > Links: > ------ > [1] > https://www.youtube.com/watch?v=r4sP1E1Jd_Y&fbclid=IwAR03cRVkBTOeYnPldcuLzFGCNiWqCR0dE5FENXF9JJtRlk75sbq5Dh2wxcY > [2] > https://groups.google.com/d/msgid/everything-list/a43531f9-d34c-4806-97f0-7665befc7e95%40googlegroups.com?utm_medium=email&utm_source=footer -- 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 everything-list+unsubscr...@googlegroups.com. 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 everything-list+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/272321496.3596453.1562436694561%40mail.yahoo.com.
