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    Default Astronomers get glimpse at the very beginning of time

    Scientists have peered at the very beginning of the universe, sampling light that was emitted at the dawn of time.

    And the breakthrough is the consequence of a happy accident: a galaxy acted as a huge space telescope, bending light so that we could see deep into space and time.

    The light that reached Earth was among the first to ever twinkle on after the Big Bang.


    Astronomers now hope they are able to make yet more similar discoveries, allowing them to watch as the universe began.


    The observations allowed scientists to pick up part of an extremely distant quasar, sending out a beam of light that is almost as old as the universe itself.




    https://www.independent.co.uk/news/s...-a8720016.html
    “If we have to have a choice between being dead and pitied, and being alive with a bad image, we’d rather be alive and have the bad image.”

    — Golda Meir

    Zionism is the movement for the self-determination and statehood for the Jewish people in their ancestral homeland, the land of Israel.







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    I have this feeling that 'time' pulsates with the Big Bang and the Big Crunch.

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    Quote Originally Posted by Jack View Post
    I have this feeling that 'time' pulsates with the Big Bang and the Big Crunch.
    And if light moves in a straight line it ends up where it started.

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    Quote Originally Posted by anonymoose View Post
    And if light moves in a straight line it ends up where it started.
    Theoretically.....if Stephen Hawking was right about the universe being more like a balloon with everything on its surface instead of everything being inside the balloon.

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    Quote Originally Posted by Kacper View Post
    Theoretically.....if Stephen Hawking was right about the universe being more like a balloon with everything on its surface instead of everything being inside the balloon.
    that doesn't even make sense.......even if the universe was on the surface of the "balloon" what began at the center is headed outward and will never get back where it started........

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    Quote Originally Posted by PostmodernProphet View Post
    that doesn't even make sense.......even if the universe was on the surface of the "balloon" what began at the center is headed outward and will never get back where it started........
    If everything is on the surface, then nothing heads "out". It just moves along the surface

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    Quote Originally Posted by PostmodernProphet View Post
    that doesn't even make sense.......even if the universe was on the surface of the "balloon" what began at the center is headed outward and will never get back where it started........
    “If we have to have a choice between being dead and pitied, and being alive with a bad image, we’d rather be alive and have the bad image.”

    — Golda Meir

    Zionism is the movement for the self-determination and statehood for the Jewish people in their ancestral homeland, the land of Israel.







    ברוך השם

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    Quote Originally Posted by PostmodernProphet View Post
    that doesn't even make sense.......even if the universe was on the surface of the "balloon" what began at the center is headed outward and will never get back where it started........
    The universe started with an explosion. Everything in the middle moved from the center rapidly. The center is empty. All the matter is somewhat equidistant from the empty center. Therefore the balloon analogy. No it will not return. There are no forces on the outside pushing back. The end is a cold dark universe.

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    Don't show this to a Muslime. You may lose your head.
    Keep changing the names. It doesn't change the meaning.



    Abortion
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    Quote Originally Posted by Jack View Post
    I have this feeling that 'time' pulsates with the Big Bang and the Big Crunch.
    Sorry, but science says there will be no crunch. But then again, they also say 95% of the Universe's mass & energy is ... missing.
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    Quote Originally Posted by Bigdog View Post
    Sorry, but science says there will be no crunch. But then again, they also say 95% of the Universe's mass & energy is ... missing.
    Sorry Einstein, this is just a scientific theory based solely upon speculation and a gut feeling. So. BAM!

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    Quote Originally Posted by guno View Post
    Scientists have peered at the very beginning of the universe, sampling light that was emitted at the dawn of time.

    And the breakthrough is the consequence of a happy accident: a galaxy acted as a huge space telescope, bending light so that we could see deep into space and time.

    The light that reached Earth was among the first to ever twinkle on after the Big Bang.


    Astronomers now hope they are able to make yet more similar discoveries, allowing them to watch as the universe began.


    The observations allowed scientists to pick up part of an extremely distant quasar, sending out a beam of light that is almost as old as the universe itself.




    https://www.independent.co.uk/news/s...-a8720016.html
    How awesome. Thanks for this post.

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    Quote Originally Posted by ThatOwlWoman View Post
    Much obliged.

    As a struggling undergraduate, I could never understand why Einstein's theory of general relativity predicted that the mass of large bodies, such as stars, could bend light - good grief, photons have no mass!! How on Earth would a gravitational force deflect something that has no mass??!

    Then I had an excellent physics professor who finally explained gravity and relativity in a way I could grasp: Gravity is not actually a "force" in the way Newtonian physics considers it. Rather, in Einstein's relativity it is a curvature of space-time. Simply put, gravity is not a force -- it is geometry, aka a fundamental geometric property of the cosmos.

    Out of about five dozen physicists I have heard try to explain relativity, it took that one guy to explain it in a way that was easy to grasp and was totally intuitive.

    The bottom line: good science teachers are far and few between, and I am convinced that this artificial division between the humanities and the natural sciences needs to be broken down - because most scientists need a crap load more training in writing, communication, and rhetoric!

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    Quote Originally Posted by Cypress View Post
    Much obliged.

    As a struggling undergraduate, I could never understand why Einstein's theory of general relativity predicted that the mass of large bodies, such as stars, could bend light - good grief, photons have no mass!! How on Earth would a gravitational force deflect something that has no mass??!

    Then I had an excellent physics professor who finally explained gravity and relativity in a way I could grasp: Gravity is not actually a "force" in the way Newtonian physics considers it. Rather, in Einstein's relativity it is a curvature of space-time. Simply put, gravity is not a force -- it is geometry, aka a fundamental geometric property of the cosmos.

    Out of about five dozen physicists I have heard try to explain relativity, it took that one guy to explain it in a way that was easy to grasp and was totally intuitive.

    The bottom line: good science teachers are far and few between, and I am convinced that this artificial division between the humanities and the natural sciences needs to be broken down - because most scientists need a crap load more training in writing, communication, and rhetoric!
    Teachers like that are precious as diamonds, eh?

    I never took physics but Mr. Owl has. He also explained gravity the same way. I think that was one of Stephen Hawking's greatest gifts -- that he could take the most esoteric and complex subjects in human thought and translate them into the-rest-of-us-speak.

    Now I want to go re-read A Brief History of Time.

    Good explanation of gravity lensing:

    https://astronomy.stackexchange.com/...tional-lensing

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