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A common theory among astrophysicists is that the Universe will never cease expanding, the conclusion from this is drawn from the fact that scientists have discovered that over the last 13 Billion years the expansion of the Universe has only quickened, and not slowed down. The reason for this is the presense of "Dark Energy" or anti-gravity that is excelling the expansion, pushing all matter faster and faster away from each other.phyco126 wrote:If you believe in the big-bang theory and stuff, then matter is neither created nor can it be destroyed. It was just all compressed into a tiny area the size of a period. When it expanded, all the energy was released and yadda yadda yadda. Once then universe expands too much, it will begin to collapse, again compressing all matter into the size of a period. Never ending cycle.
Dark Energy is a hypothetical sort of negative pressure, so in the large scale of the Universe, instead of pulling everything towards itself, it pushes it away, overcoming a matter/gravity dominated Universe. Hence the term anti-gravity (They are when used in this case, one in the same). Some recent NASA proposed studies pointed out that some 70% of the Universe is made up of this Dark Energy.Joe17 wrote:ok so I have a question. Can you explain dark energy and anit-gravity to me???
The evaporation of a black holes mass through the gradual release of their energy actaully results in exponential heat-up. It is theorized that the endpoint then being an enormous gamma-ray burst. The death of a star can result in a new star, however the death of a black hole, so far, yeilds no evidence of creating new heavy matter like a star.Joe14 wrote: I can kind of pictue the universe as a cylindrical object that expands unbtil stars begin to implode and create black holes that over large periods of time relasing Hawkins radiation and from absorbing matter they begin to "fizzle" out and create large areas of dense gasses and solids that in turn form into a new star. once this new star is born, it begins to attract other matter towards it, creating a solar system, and the universe expands only to complete the cycle.
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