Tuesday 22 September Meeting – Dark Matter and Dark Energy

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Dark matter and dark energy. “The Invisible Universe” Around 85% of the matter in the Universe is dark, and of a type not understood by physicists. Although it doesn’t shine or absorb light, astronomers can detect this dark matter through its effect on stars and galaxies, specifically from its gravitational […] Read more»



Tuesday 25 August meeting – “Astronomical Alchemy” – the origin of elements

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“Astronomical Alchemy” – the origin of elements While hydrogen and helium were produced in the Big Bang, the origin of heavier elements, the silicon in rocks, the iron in our blood, and the oxygen we breathe, lies in the lifecycle of stars. Nuclear fusion reactions in stars produce energy and […] Read more»





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