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Last Post 3/19/2012 12:53 PM by  Paulett Liewer
Hubble Universe Images
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Anonymous





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3/19/2012 7:54 AM
    Dear Scientists, I am a student at the Academy of Aerospace and Engineering here in Bloomfield, CT. I was wondering how the Hubble satellite produced the now famous image of the entire universe, even though the point of image capture is far over 30,000 light years away. How is this possible? Thank You Very Much, Spencer
    Tags: Hubble, Universe, light years

    Terry Kucera



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    3/19/2012 12:43 PM

    Hi Spencer,

    Could you give a link to the image so we know which particular one you are talking about?

    Terry


    Paulett Liewer



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    3/19/2012 12:53 PM

    Dear Terry and Spencer,

    Of course Spencer is right - Hubble can not image the entire Universe.

    I'm guessing Spencer is referring to one of the Hubble Deep Field images.

    Take the Hubble Deep Field Image (http://apod.nasa.gov/apod/ap040309.html).

    This is the deepest ever (farthest back in time ) image of the Universe, but it covers only a very very small part of the sky - roughly one thirteen-millionth of the total area of the sky or a field of view just one-tenth of the diameter of the full Moon as viewed from Earth.

    This image looks back approximately 13 billion years (between 400 and 800 million years after the Big Bang (when the Universe began).

    So really Hubble sees only a very very tiny portion of the Universe.

    Paulett


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