12 The Big bang theory 2007-2019 thank you for the memories shirt can point our telescopes out at the universe, and quite simply see stuff that is a long way away moving away from us. Like the changing sound of a racecar passing us by, we can detect the lengthening of the light that results from their motion away from us. The entire universe looks red, because of this motion. Nearly every single galaxy aside from Andromeda, our closest friend is moving away from us. If you accept this, it’s not hard, therefore, to imagine this running in reverse, to wind back time, and end up at a point back where everything was all in one place, and flying outwards. That’s a Big Bang model, and it seems to follow fairly trivially from this model! To that extent, the simple fact that everything is moving away from us is overwhelming evidence.
12 The Big bang theory 2007-2019 thank you for the memories shirt and sweater
Best 12 The Big bang theory 2007-2019 thank you for the memories shirt
12 The Big bang theory 2007-2019 thank you for the memories shirt called by actual scientists the current standard cosmology is known predicts these with ease, however, to an astonishing degree of accuracy. The primordial elements essentially mean that you can look at a universe that once existed in a hot, dense state too hot for elements to form, and ask what elements would be formed when it cooled down. This is a messy calculation, but the principles of it are easily understood with a reasonable knowledge of statistical mechanics. You calculate that the universe would be helium, with trace amounts of Lithium. When we look very, very far away, in the early universe, this is exactly what we measure! Score one for the theory! In that case, the fact that the Universe is expanding is obviously pretty important but it doesn’t help us differentiate between different expanding universe model.
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