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My question is related to the base of cosmology science and theories.

If all what we know about cosmology science is based on our observation from sky and whatever we observe goes back to thousand and million and billion years ago, how can we be sure about some theories like universe expansion. Maybe universe is back to contraction as we talking now?

Topics: Cosmology
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    Jan 6 2014: Jimmy, I believe that there are many as yet unknown or unperceived things which may be currently present, and also that there may still be new ways of interpreting things that we know exist and which we believe in.

    I'm certainly not saying that I have any insights into what these new things or any novel interpretations about them; in fact, I would be hard-pressed to even suggest what they might be.

    My main thought, and what thrills me the most about the unknown, or the untested, the unproved, is that there's more knowledge and new worlds yet ahead.

    As Shakespeare's Hamlet suggests:

    " And therefore as a stranger give it welcome.
    There are more things in heaven and earth, Horatio,
    Than are dreamt of in your philosophy."


    Hamlet Act 1, scene 5, 159–167

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