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This is a rather lengthy answer as I tried to go a bit in depth; there is a short summary at the end. Will we see more or fewer stars with time? The short answer to this is: We see less stars with time, due to the fact that cosmic expansion is accelerating. Although what we really see at the relevant distances are galaxies; single stars are far too far ...

2

This is a really interesting question. I think the easy answer has already been given: Stars require lighter elements (Hydrogen, Helium) in order to generate energy (and hence light) from fusion. There is a finite (but thankfully enormous) amount of these lighter elements in our universe, all (in a "black boxed" sense) of which is gradually heading down ...

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Star formation will slowly start to decrease in galaxies as the universe ages because of the conversion of gas, such as hydrogen, into heavier elements, such as carbon and iron. Essentially the universe is slowly running out of fuel. Stars have a hard time fusing heavier elements. Eventually there will be no stars left. What will remain are black dwarves, ...

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If the age of the universe is $1 / H_0$, then as the universe gets older $H_0$ would get smaller. So theoretically the recessional velocity of distant galaxies gets smaller and you should see more. Of course observation falsifies $H_0$ getting smaller and thus the expansion models are falsified. Meaning the universe looks roughly the same at all ...

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I am probably sure that you have heard about how the sun is going to become a red giant over the next few billion years and later become a incredibly dense white dwarf.This concept applies for all stars of all the universe, not that they all become white dwarfs, but that they all run out of fuel at some point move into another star phase. There are mainly 2 ...

0

Will we see more stars? The big bang blasted matter in all directions, resulting in the particles moving away from each other. These slowed down due to gravitation pull on each other. First forming small clumps due to their proximity, later with the clumps of clumps pulling together. This process keeps going recursively eventually forming stars, planets, ...

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I red some times ago about a scenario in which the number of visible objects is becoming smaller and smaller. This is basically due to the Hubble's law: the further two objects are, the faster they move away from each other and when the speed exceed the speed of light, no news can come from them any more. If you take into account that the expansion of the ...

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I had the same question after watching Dr. Paul J. Steinhardt's talk at Vanderbilt http://www.youtube.com/watch?v=IcxptIJS7kQ This gentleman teaches Big Bang Cosmology in Ireland and says the Planck data's non-Gaussian results put a kink in the ekpyrotic models. http://coraifeartaigh.wordpress.com/2013/03/28/planck-and-the-inflationary-universe/ In Dr. ...

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