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How many light years is earth (approx) from where the big bang occurred?

How many light years is earth (approx) from where the big bang occurred?
CA Merritt from West Sussex (Aged 55+)


3 Responses

  1. The Universe started with a ‘Big Bang’ and since then has been expanding equally at all places. So the Universe has no centre. Therefore you cannot say that the Earth is as specific distance from where the ‘Big Bang’ occured.

  2. Hi :).
    Given the answer above, may I add an alternative approach to rationalising the passage of time since that event known as ‘The Big Bang’?
    Since even the most recent discoveries corroborate the hypothesis that this almighty expansion began about 15 billion, i.e. 15 thousand million years ago, it may be that a comparison to the speed of light (quoted as 300,000 km/sec) may lead to your answer in fact? The speed of electromagnetic radiation moving through empty space always has the same value and ‘c’= distance divided by the time taken so the distance must equal the speed of light times the time which has elapsed since the formation of the first photon- which itself was, it seems, produced when the first starlight was generated some 300,000 years later. Additionally, the ‘Big Bang Nucleosynthesis Hypothesis’ further propounds an explanation for the development / formation of the light(er) elements throughout the cosmos which is consistent with the other evidence so the suggestion is very convincing i.e. that the birth of our universe occurred as the direct result of such an event. However it must, it seems, remain a puzzle as to what actually preceded that moment! The search continues so who knows how much new knowledge we may soon acquire?
    I hope that you will find that my proposals for lines of enquiry have merit. Thank you for an intriguing question.
    Good Luck,

  3. To expand upon the first response, imagine the universe as 2 dimensional rather than 3 dimensional. The big bang occurred at one point and space and everything has expanded from that point in all directions since. Note that all galaxies are also moving away from all other galaxies. The only way to describe this geometrically is a universe that is the surface of a sphere that has been expanding from 1 point since the big bang. All points are moving away from each other.

    So your question, how far is the earth from where the big bang occurred, is difficult. In one sense, it is the radius of the sphere that the universe is on, but the point of the big bang no longer exists in our universe. Alternatively, you could say that since the surface of the sphere has been expanding from one point, that all points in the universe are where the big bang occurred.

    I hope this gives you a better understanding.

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