• Question: what o we see at the end of the universe

    Asked by anon-267450 to Pratik, K on 5 Nov 2020.
    • Photo: K Sasitharan

      K Sasitharan answered on 5 Nov 2020:

      The universe is huge! It’s huge on a scale beyond our comprehension. The observable part of the universe (that is what are able to examine and study is a very tiny part of the actual whole universe. Some estimates show that the end of this universe might be close to about 5 billion years. Probably all the matter to fuel stars will be exhausted by then, and matter itself will decay into radiations. So what will be left of the universe will probably a cold, dark, lifeless place.

Comments

  • Photo: Liza

    Liza commented on :

    Our Universe is about 14 billion years old. Since light travels with a certain speed (1 light year per year), there’s a limit to how far away the light could reach us from, or how far we can see. If life was simple for physicists, the furthest we could see would be 14 billion light years. It’s actually about 45 billion light years, because space expanded over time, and that’s a whole other question 🙂 But there’s a lot more of the Universe than that, so we can’t see the real end of the Universe!
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    A cool thing is that because the light left edge of the observable Universe 14 billion years ago, right after the Big Bang. Imagine someone taking a picture of you when you were a baby and sending it really far away. Well, we are finally getting pictures that were taken 14 billion years ago – a very baby Universe! By now things there probably look the same as they do here, but what we’re seeing is very different: the earliest galaxies and stars.
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    This is how we can study the early Universe: by looking at images that we get from really far away.