When the first stars blinked on: Very first star...


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DatahopaForumHeavens AboveAstronomy & Near Earth PhenomenaWhen the first stars blinked on: Very first stars may have turned on when the universe was 750 million years old



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When the first stars blinked on: Very first stars may have turned on when the universe was 750 million years old

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When the first stars blinked on: Very first stars may have turned on when the universe was 750 million years old

Researchers have peered far back in time, to the era of the first stars and galaxies, and found matter with no discernible trace of heavy elements. <img src="hxxp: feeds. feedburner. com/~r/sciencedaily/space_time/astronomy/~4/DeidjbcCfqg" height="1" width="1"/>
Source: When the first stars blinked on: Very first stars may have turned on when the universe was 750 million years old
Posted December 17, 2012, 00:23:01 AM Logged

Offline Diesel
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Found this early this morning. Not sure quite what all this means though other than a few models are likely to be disproved. Any ideas Snowy ?.

Posted March 19, 2013, 06:10:29 AM Logged
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Offline Snowcrash
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Legions post is for the first stars (750,000,000 yrs) or at least the oldest we've found yet. We measure this via their red shift.

Your post is about first light (375,000 yrs) which we see as the CMB (cosmic microwave background) and ESA's latest satellite 'Plank' that will measure it more accurately and nail down 'inflation' theory.

The age of the universe is now quoted as 13,770 million years.
The observable universe is a sphere with light no older than 13.77 billion years away (anything further will not have reached us) but a radius of 46 billion light years.



Have edited mistake in CMB age to 1000s not 1000000s years. Also, new age of the universe is 13.82 billion years.
Posted March 19, 2013, 07:13:06 AM
Last Edit: March 22, 2013, 17:53:58 PM by Snowcrash
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Offline DD1975
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The age of the universe is now quoted as 13,770 million years.


Unless you believe Jim Bowen and his funny hat wearing friends in which case the Universe popped into existance over the space of 7 days on the whim of a magical being 8000 years ago 
Posted March 19, 2013, 17:24:42 PM Logged
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Offline Snowcrash
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The age of the universe is now quoted as 13,770 million years.


Unless you believe Jim Bowen and his funny hat wearing friends in which case the Universe popped into existance over the space of 7 days on the whim of a magical being 8000 years ago 

Which is why we can only see 8000 light years. Not.
Our galaxy's 100,000 light years across.

The theory must fit the facts. You can't twist the facts to fit the theory. Or you can but it's just plain wrong.
Posted March 19, 2013, 19:42:15 PM Logged
“I cannot remember the books I've read any more than the meals I have eaten; even so, they have made me.”

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Offline DaveMorton
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I'm one of the strange ones that doesn't take the book of Genesis literally. While I have unwavering faith that God created the heavens and the Earth, I do NOT think that the creation story, as expressed in the first chapters of Genesis, is a "factual description" of events. I look at it more in the terms of allegory and metaphor, rather than a set, immutable list of events, constrained to the timeframe given.
Posted March 19, 2013, 20:45:12 PM Logged
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Offline DaveMorton
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Comfort the Disturbed! Disturb the Comfortable!

Oh. Still in Phoenix. SNAFU with the flight, and as a result, I'm stuck here a few extra hours. Sad
Posted March 19, 2013, 20:46:41 PM Logged
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Offline sybershot
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Sorry to hear that Dave Sad
Posted March 19, 2013, 21:28:13 PM Logged

Offline Snowcrash
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I'm one of the strange ones that doesn't take the book of Genesis literally. While I have unwavering faith that God created the heavens and the Earth, I do NOT think that the creation story, as expressed in the first chapters of Genesis, is a "factual description" of events. I look at it more in the terms of allegory and metaphor, rather than a set, immutable list of events, constrained to the timeframe given.

You and many other, level headed, people. Many physicists have been Jewish/Christian/Hindu believers. I can't think of any Muslim physicists, though that could be my prejudice.
I feel that if you pick and choose what you want from the bible then why choose any of it. Though I could be throwing the baby out with the bathwater.
I shall now go on to prove black is white and get run over on a zebra crossing (xing)  Grin
Posted March 19, 2013, 22:09:26 PM Logged
“I cannot remember the books I've read any more than the meals I have eaten; even so, they have made me.”

Ralph Waldo Emerson

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This thread is veering.   no-no

Some post have been deleted.
Posted March 20, 2013, 19:38:31 PM Logged

Offline Snowcrash
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Thought I'd put the CMB minutephysics post up.

Posted March 22, 2013, 17:55:00 PM Logged
“I cannot remember the books I've read any more than the meals I have eaten; even so, they have made me.”

Ralph Waldo Emerson
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