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3

There are several question marks, here I try to analyze one by one. 3rd paragraph: yes and no. The clustering depends on the following two energies -- (absolute value of) gravitational potential of the galaxy $\phi$, and the kinetical energy of neutrinos $E_k$. The average energy of relic neutrinos $\bar{E}_k$ decreases as the universe expands. $\phi$ ...

-1

If a star Is 13.82 billion light years away It takes 13.82 billion years for us to see the Image so 13.82 billion + 13.82 billion = 27.64 billion years old because while that Image was flying through space, time was still moving forward also If I set up a camcorder telescope 1 light year away and look at earth then I can see the past on earth the closest ...

9

There's a very common misconception that the Big Bang happened at a point like a bomb going off. It doesn't help that almost ever TV documentary on the subject represents the Big Bang in this way. Explaining what actually happened is hard without going into the Maths, but here's an explanation I gave taken from (of all places) the Science Fiction Stack ...

5

The question you are asking yourself is ill defined. The universe has no center, thus you cannot ask what is there. The important thing to realize is that a singularity (presented in the Big Bang Theory) is not a physical thing, you can't say "oh look at that singularity over there"(from that point the universe started). In fact a singularity is merely a ...

0

It depends what you mean by 'cannot happen'. Go back to a period before you saw that documentary, but not so far back time didn't exist, in ancient Greece there began a raging debate between Plato and his student Aristotle, about the nature of knowledge. Ultimately Aristotle's views gave us theories such as causation, and centred around observed ...

0

The simple answer to your question is that if there are other universes by virtue of the expansion we see in the universe around us, there is no way we can know anything about them directly (since the distance between them is increasing, and light can only go at light speed, so no information exchange). Now, with that said, Velenkin thought about Alan ...

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