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Astronomer's find earliest stars
Posted on 6/17/15 at 3:41 pm
Posted on 6/17/15 at 3:41 pm
LINK
I thought this was interesting, they found the earliest stars from directly after the Big Bang. I've always wondered how the universe was populated with the heavier elements if they come via supernovas and the lifespan of stars is so long, especially given the ~14 billion year old estimated age of the universe.
If these stars were much much larger they would burn through their fuel quicker (200 million years per the article). That would explain the timeframe and how the initial heavier particles were formed.
Interesting.
I thought this was interesting, they found the earliest stars from directly after the Big Bang. I've always wondered how the universe was populated with the heavier elements if they come via supernovas and the lifespan of stars is so long, especially given the ~14 billion year old estimated age of the universe.
If these stars were much much larger they would burn through their fuel quicker (200 million years per the article). That would explain the timeframe and how the initial heavier particles were formed.
Interesting.
Posted on 6/17/15 at 3:42 pm to DavidTheGnome
the earth is 6000 years old bro
Posted on 6/17/15 at 3:45 pm to Sofa King Crimson
quote:
the earth is 6000 years old bro
Is that what your fairy tales say?
Posted on 6/17/15 at 3:46 pm to DavidTheGnome
quote:
200 million years
Might want to get a Sneakers Bar, gonna be there for a while.
Posted on 6/17/15 at 3:46 pm to DavidTheGnome
quote:
Big Bang.
Didn't happen
Posted on 6/17/15 at 3:47 pm to Sofa King Crimson
Where did you learn this?
Posted on 6/17/15 at 3:55 pm to DavidTheGnome
I'm not sure I gather what you are saying in the OP
This post was edited on 6/17/15 at 4:13 pm
Posted on 6/17/15 at 10:19 pm to Artie Rome
quote:
I'm not sure I gather what you are saying in the OP
I guess what I was saying is that it never made sense to me how we would have all of the heavier (ie not hydrogen and helium) elements in the universe, especially in the relative quantities that we do. Given the age of the universe of roughly over 14 billion years and the lifespan of stars of (guessing and I realize it varies wildly due to temperature and mass) of 7 or more billion years, it just always puzzled me how there was enough time for a whole series of stars to have formed, burned through their fuel, began fusing heavier elements and exploded, and seeded the universe with the elements that we have.
Reading the article though I never thought of it that way and it does make sense. After the very early universe "cooled" and hydrogen and helium atoms formed, there would be this gigantic mass of nearly uniform (but not perfectly!) distribution everywhere and early stars would have formed from that. I'm assuming that hydrogen and helium were very abundant resulting in the massive early primeval stars that burned through very quickly, and that helps make the timespans involved make more sense.
And the universe itself would have been smaller. Expansion would have already occurred by the time these first stars began to form, but still space time would have been more compacted than its current state.
I'm no physicist though so maybe someone who knows more about this could chime in. I just thought that it was interesting that we are finally getting glimpses of the very early universe and as the next generation of both Earth and space based telescopes come on line we should get a clearer picture.
This post was edited on 6/17/15 at 10:19 pm
Posted on 6/17/15 at 10:20 pm to DavidTheGnome
Deddy said the big bang was made up by scientist who worship the devil
Posted on 6/17/15 at 10:22 pm to DavidTheGnome
Also I have no idea of the quantities of each element produced in a supernova, and it may be much larger than what I envision and thus my perspective on the capabilities of these explosions may just be underestimated. Something that I've thought about, but again I'm no physicist.
This post was edited on 6/17/15 at 10:23 pm
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