Saturday, November 19, 2022

Our place in an amazing universe

by John Maryon


Looking out into space it is possible to see back in time some 13 billion years and study the pattern of cosmic microwave radiation that resulted from the creation of the universe. Light travels at 186,282 miles per second which makes it almost impossible to grasp the vast size of the universe. We can observe the remnants of cataclysmic explosions, see giant red stars near the end of their life and the birth of new stars forming within vast nursery clouds of dust and gas as they collapse under gravity. Large black holes lurk ominously at the centres of billions of galaxies each containing billions of star systems.
    We must also examine events at other extreme of size. The Greek philosopher Democritus believed that what he called atoms were the smallest parts of matter but he was not in a position to vary his idea. With a typical radius of 0.1 nano metres over 5 million could be placed on a pinhead. Democritus would have been reassured by the work of the Russian chemist Demitri Mendeleev who created the Periodic table in1869. The modern table lists118 naturally occurring elements in order of atomic number related to their make up in terms of electrons, protons and neutrons. Hydrogen being the lightest and uranium the heaviest.
    It is now known that the electron is an elementary particle but protons and neutrons are themselves made up of elementary particles known as quarks. The Large Hadron Collider in Geneva has recently identified a particle called Higgs bosen which had been predicted mathematically and was linked to a field that created matter. It is now believed that all forces, waves and matter, including atoms, are the result of the interaction of various forms of wave energy and fields at a sub atomic level. For example magnetic and electrostatic fields combine to produce light.
    Within the apparent chaos of the universe life has evolved on earth and almost certainly in other places as well. The earliest forms on earth were microscopic organisms whose presence were identified by specific carbon molecules found in rocks 3.8 million years old. Life arose from chemical reactions in non living matter consisting of carbon, water and amino acids that formed in the earth's early atmosphere. Sunshine, hot water and carbohydrates provided the energy to drive the process. In a star system there exists a zone of tolerance where the temperature is just right for life to develop. Also some small cold moons in close proximity to much larger bodies could be heated by gravity stresses in their rocky cores.
    But the big question is why did the process start and continue? Isaac Newton believed that all the conditions for life were created by God. In the early 1970s John Conway, a young mathematician at Cambridge, examined the probability of pattern replication using an infinite grid of squares. By imposing a simple set of rules of contact between identified random squares, Conway and his students, were able to demonstrate that eventually complex patters could be automatically repeated. This revolutionary principle of order from apparent chaos applied to the primeval soup could make life inevitable.
    Today life on Earth has evolved to fill every possible niche for its existence. It is estimated that the total number of species exceeds 8.7 million. The one which I wish to examine in more detail is our own.
    First simple life forms consisted of single cells formed from organic molocules. They processed no consciousness and just survived in a fixed environment. As conditions changed those that had mutated were able to flourish. Variety developed and the natural laws of evolution took over. Cells that combined with others were more successful and more complex organisms emerged that were able to sense their environment and react accordingly. This marked the beginning of a conscious existence for life that would now develop intelligence.
    The ability to observe and respond rewarded those creatures that were to exploit their situation and predators also evolved. Life became more advanced and eventually Homo Sapiens became the dominant species.
    Humans are social creatures that even in their early development existed in small family groups with a life style based upon hunter gathering. Those that formed into larger tribal groupings were more successful in meeting danger and facing competition. For a brief period a form of primitive communism existed for their mutual benefit. Ultimately the 'division of labour' with the emergence of specialist skills and crafts led to the creation of wealth and privilege.
    Human development still continues and I believe can be divided into two phases of progress. Barbarian and Socialist. Today both exist simultaneously and human civilization has reached a major turning point. Capitalism and its extreme nationalistic forms represent the final stages of barbarism. Socialism is the beginning of a new progressive social advance that will change society and human relations for ever. The changes take time to mature, develop and must embrace the experiences of individual nations and peoples.
    Marx and Engels examined the social and production relations of capitalist society and outlined the scientific principles for building a new form of society that would be able to create a beautiful new world. One in which true freedom would exist without explotation and class repression. We live in a physical world within which we may shape our own destiny. On this basis of fraternity and respect we can explore and study the universe and reach a deeper understanding of everything.

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