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Thread: Reading the Universe.

  1. #1 Reading the Universe. 
    Forum Sophomore Estheria Quintessimo's Avatar
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    An odd thing.

    The results of which would mostly depend on the expansion of the universe....

    BUT...

    So the Universe is 14 Billion years old.

    What we can observe is less then 14 Billion years old. We had Deep Field and Ultra Deep Field.

    ---

    But I was thinking... and yeah we will probably not be able to pull this one off at this time....

    But with every second time passes within spacetime,.. photons are comming our way.

    Eventually second by second,.. we would see more galaxies.

    Its would be a tech feature we can not do yet.

    Too notice photons building up galaxies second by second whilst our telescopes focus on their space, which is at the ultra ultra ultra edge of 14 billion years light speed observable space.


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    Quagma SpeedFreek's Avatar
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    Quote Originally Posted by Estheria Quintessimo View Post
    Too notice photons building up galaxies second by second whilst our telescopes focus on their space, which is at the ultra ultra ultra edge of 14 billion years light speed observable space.
    An interesting thought, isn't it?

    Just one thing I would like to point out though. The ultra ultra edge of our observable universe is defined by the light that has taken the longest time to reach us, and that time is nearly 14 billion years, as you say.

    But there were no galaxies around to see, nearly 14 billion years ago.

    The light that has taken the longest time to reach us is the "cosmic microwave background", which is known as the "afterglow" of the Big-Bang, and it comes from an event called "recombination" that occurred sometime around 370,000 years after the Big-Bang, when atoms formed in a flash of light and the universe first became transparent. This was the first time that there was enough empty space between the stuff of the universe for photons to be able to travel freely, as before that the universe was opaque due to everything being so close together than photons couldn't travel without hitting something.

    These photons were released throughout the whole universe at that time, ~370,000 years after the Big-Bang. They have been moving through the universe ever since, moving in all directions and so coming at every place from all directions and as the universe has expanded, these photons have cooled down and been "stretched" into the microwaves we see today.

    You might like to read a couple of old posts of mine on this subject, which you will find on this forum at this link.

    And if you are up for it, there are a couple of other posts I made at this link that you might find interesting. The second one even has a diagram!


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