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Thread: Discussion: Hubble Sees a Huge Star Forming ...

  1. #1
    Join Date
    Jul 2003
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    SUMMARY: The Hubble Space Telescope was recently used to peer into a star forming region that's a million times more active than the Orion Nebula. The Lynx Arc contains a million blue-white stars (the Orion Nebula has four) which are twice as hot as similar stars in our own Milky Way galaxy; but this cluster is located 12 billion light-years away, and seen when the Universe was only 2 billion years old. This discovery will help astronomers understand how some of the first stars formed shortly after the Big Bang.


    Comments or questions about this story? Feel free to share your thoughts.

  2. #2
    FAUD Guest
    IF A MATTER IS 12 BILLION LIGHT YEAR AWAY FROM EARTH, WE SAY IT WAS 2 BILLION YEARS OLD (AFTER THE BIG BANG). I THINK WE ARE ASSUMING THAT THE BIG BANG OCCURRED 14 BILLION LIGHT YEAR FROM EARTH. HOWEVER, THE EXPLOSION DISTRIBUTED MATTER AND ANTI MATTER IN A SPHERICAL SHAPE. THE DISTANCE BETWEEN ANY OBJECT TO EARTH DEPENDS OF THE RELATIVE DIRECTION OF OUR GALAXY AND THAT GALAXY. HOW COULD WE SUBTRACT THE AGE FROM THE BIG BANG FROM THE DISTANCE OF ANY OBJECT AND SAY THAT IS THE AGE OF THE OBJECT RELATIVE TO THE BIG BANG. ANYONE CAN EXPLAIN THIS FOR ME. THANKS.
    FAUD

  3. #3
    Join Date
    Jul 2003
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    The speed of light is the major part of this. We know that the Universe is 13.7 billion years old. So, if you look at something that's 12 billion light years away, it had to exist when the Universe was only 2 billion years old.

    Unfortunately, we just can't see stuff that's farther away than 14 billion light-years away because it would be before the beginning of the Universe.

    It's very likely that there are objects which are 30 billion light-years away, but we won't be able to see their light for another 30 billion years. Does that help clear it up?

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