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Showing results for tags 'astrobiology'.
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Scientists announce a breakthrough in determining life's origin on Earth—and maybe Mars Foundation for Applied Molecular Evolution, June 3, 2022 The open access paper is: Craig A. Jerome, Hyo-Joong Kim, Stephen J. Mojzsis, Steven A. Benner, and Elisa Biondi. Catalytic Synthesis of Polyribonucleic Acid on Prebiotic Rock Glasses Astrobiology. ahead of print http://doi.org/10.1089/ast.2022.0027 Yours, Paul H.
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Astro-Virology By Gemma Lavender, Astrobiology, Nov 28, 2013 https://www.astrobio.net/alien-life/astro-virology/ the paper is: Griffin, D.W., 2013. The quest for extraterrestrial life: what about the viruses?. Astrobiology, 13(8), pp.774-783. https://www.liebertpub.com/doi/abs/10.1089/ast.2012.0959 https://pubs.er.usgs.gov/publication/70047754 A related paper is: Berliner, A.J., Mochizuki, T. and Stedman, K.M., 2018. Astrovirology: viruses at large in the universe. Astrobiology, 18(2), pp.207-223. Abstract: https://www.liebertpub.com/doi/abs/10.1089/ast.2017.1649 PDF: https://drpaulroth.com/wp-content/uploads/2018/06/Astrovirology.pdf Yours, Paul H.
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A field guide to finding fossils on Mars. (open access paper)
Oxytropidoceras posted a topic in Fossil News
McMahon, S., Bosak, T., Grotzinger, J.P., Milliken, R.E., Summons, R.E., Daye, M., Newman, S.A., Fraeman, A., Williford, K.H. and Briggs, D.E.G., 2018. A field guide to finding fossils on Mars. Journal of Geophysical Research: Planets.vol. 123, no. 5, pp. 1020-1040 https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2017JE005478 McMahon, S., The chemistry of fossilization on Earth and Mars. http://www.portlandpresspublishing.com/sites/default/files/biochemist/Biochemist Space issue Dec 2018/BioDEC18_chemistry of fossilization pg 28.pdf Yours, Paul H.-
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NASA-Funded Research Creates DNA-like Molecule to Aid Search for Alien Life
Heteromorph posted a topic in Members' News & Diversions
NASA-Funded Research Creates DNA-like Molecule to Aid Search for Alien Life Always interesting to see evidence for the possibility of other systems/bases for life. Maybe someday...-
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Did Meteorites ( and Darwin's Little Warm Ponds) Start Life ?
Oxytropidoceras posted a topic in Fossil News
Evidence suggests life on Earth started after meteorites splashed into warm little ponds, PhysOrg, October 2, 2017 https://phys.org/news/2017-10-evidence-life-earth-meteorites-splashed.html How did Life Start? Meteorites crashing into Darwin's Little Warm Ponds May Have been Trigger, by Megham Bartels, Newsweek. http://www.newsweek.com/2017/10/27/how-did-life-start-meteorites-crashing-darwins-warm-little-ponds-was-possible-675655.html The paper is: Pearce, B.K., Pudritz, R.E., Semenov, D.A. and Henning, T.K., 2017. Origin of the RNA world: The fate of nucleobases in warm little ponds. Proceedings of the National Academy of Sciences, vol. 114 no. 43, pp. 11327-11332 http://www.pnas.org/content/114/43/11327 https://arxiv.org/pdf/1710.00434.pdf Yours, Paul H.- 2 replies
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This could suggest opalised microbial fossils on Mars...
The Amateur Paleontologist posted a topic in Members' News & Diversions
In 1911, near the Egyptian village of El Nakhla El Baharia was recovered a meteorite of martian origin. It belongs to a class of martian meteorites (called "nakhlites") that are derived from a ~1.3 billion year old sill or lava flow. They are mainly composed of magnesium, silica and iron. The Nakhla meteorite showed traces of a very particular form of silica, hydrated and amorphous: opal. This opal was the first in a few traces of martian opal. However, the hydrated silica in the Nakhla meteorite showed showed something rather special: it was very similar to the sort of opal that, on Earth, forms around hydrothermal vents. Around these vents, microbial life thrives and prospers. Could this suggest opalised microbial fossils on Mars? Are we this close to finding fossil life elsewhere in the universe? Further research will tell...- 6 replies
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