![]() ![]() Scientists do not entirely understand how this could happen, but they do know that only five per cent of the Universe is made of the matter (stars, galaxies, people, planets and so on) that is currently observed. The expansion of the Universe appears to be accelerating. Blue shift: When source is approaching the observer then the frequency of light appears to be increasing or the wavelength of light appears to be decreasing to. Since 1998, astronomical observations of supernovae have suggested that distant galaxies are moving away at an increasingly faster rate. Inspired by Redshift, Blueshift adjusts the colour temperature of your monitor according to brightness outside to reduce eye strain and make it easier to. The answer to this would give them an idea of whether the Universe is going to expand forever, or if the gravitational attraction between all objects will eventually slow to a stop, attracting everything back together in a 'Big Crunch'. This loss of energy corresponds to a decrease in the wave frequency and increase in the wavelength, known as a redshift. (Red light has a longer wavelength than blue light.) The 3 causes of these effects are: 1) The. In physics and general relativity, gravitational redshift (known as Einstein shift in older literature 1 2) is the phenomenon that electromagnetic waves or photons travelling out of a gravitational well (seem to) lose energy. The future of the Universeįor many years, scientists have tried to work out the density of the Universe. A redshift means the wavelength is increased and a blueshift is when the wavelength shortens. The discovery of the CMBR, after it had been predicted by the theory, provided very strong support for the Big Bang theory. The terms redshift and blueshift apply to any part of the electromagnetic spectrum, including radio waves, infrared, ultraviolet, X-rays and gamma rays. The discovery of red-shift in light from distant galaxies led to the development of the Big Bang theory. Initial Big Bang heat should now be thinly spread across the whole UniverseĬMBR is everywhere at a temperature of about -270☌ More distant galaxies have greater red-shift ![]() More distant galaxies should move away faster Prediction from Big Bang theoryĭoes evidence support the Big Bang theory? Professor Brian Cox explains how evidence for the Big Bang can be found by analysing the colour of starlight. ![]()
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