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wildwill
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I was wondering because of my personal theories what others thought of the universe expansion.
please help
please help
wildwill said:I was wondering because of my personal theories what others thought of the universe expansion.
please help
Drakkith said:But just about the expansion of space, see here: http://en.wikipedia.org/wiki/Metric_expansion_of_space
wildwill said:i read it but i poses the question, could it be rotating thus giving the illusion of expansion
One of the key pieces of evidence for the expansion of the universe is the observation of redshift in the light from distant galaxies. This redshift indicates that these galaxies are moving away from us, and the further away they are, the faster they appear to be moving. This is consistent with the idea of an expanding universe.
The expansion of the universe occurs due to the presence of dark energy. This is a mysterious force that is causing the expansion of the universe to accelerate. It is thought to make up about 70% of the total energy in the universe.
The rate of expansion of the universe is measured by a value known as the Hubble constant. This value is currently estimated to be around 70 kilometers per second per megaparsec, meaning that for every additional megaparsec (about 3.26 million light years) of distance, the expansion of the universe increases by 70 kilometers per second.
One way to measure the expansion of the universe is through the use of redshift. By studying the light from distant galaxies, we can measure their redshift and calculate their distance from us. This information can then be used to determine the rate of expansion of the universe.
Based on current observations and theories, it is believed that the expansion of the universe will continue forever. However, the rate of expansion may change over time due to the influence of dark energy and other factors. Some theories also suggest the possibility of a "big rip" scenario, in which the expansion of the universe eventually becomes so rapid that it tears apart all matter and space itself.