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Blueprint for Life

28 April 2022

At https://phys.org/news/2022-04-blueprint-life-asteroids.html … according to a new analysis by scientists they have found the last two of the five informational units of DNA and RNA yet to be discovered. They are actually in samples from meteorites already in their possession, or within access to them. The new findings demonstrate that all the units could have been delivered to earth from elsewhere. Chemical reactions in space rocks can make some of the ingredients of life. They could even have fallen through the earth’s atmosphere in the form of dust, presumably with an origin in comets or asteroids.

At https://phys.org/news/2022-04-enigmatic-mars-evidence-violent.html  … olivine rocks on Mars are quite common, and are thought to have a link to catastrophic tectonic activity in the early solar system. Now they have found ignimbrites in association, or in the vicinity of olivine. These are both igneous in origin, and sedimentary. They are thought to originate in super volcanoes, in explosive eruptions. Others have suggested impact events.

Ignimbrite, it is thought, is formed from pyroclastic ash and pumice [the sedimentary element] and magma. Hot gases, molten ash and pumice, flowing through the landscape for dozens of miles, piling up in layers hundreds of feet thick ‘in just a few days.’ Following emplacement ignimbrite duly cooled over months or years, leading to a network of fractures, or cooling joints.

At https://phys.org/news/2022-04-properties-galactic-clusters.html … researchers at Istanbul Univeristy have used data from ESAs Gaia space observatory to look at galactic open clusters. See also https://arxiv.org/abs/2204.07745

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