Comments on: Researchers Spot an Ancient Starburst from the Universe's Dark Ages http://blogs.discovermagazine.com/80beats/2009/10/28/researchers-spot-an-ancient-starburst-from-the-universes-dark-ages/ Mon, 22 Apr 2013 21:34:00 +0000 hourly 1 http://wordpress.org/?v=3.4.2 By: Steve http://blogs.discovermagazine.com/80beats/2009/10/28/researchers-spot-an-ancient-starburst-from-the-universes-dark-ages/#comment-13133 Steve Fri, 30 Oct 2009 16:18:43 +0000 http://blogs.discovermagazine.com/80beats/?p=4987#comment-13133 If the expansion of the universe is accelerating then why would the light catch us now? If the expansion of the universe is accelerating then why would the light catch us now?

]]> By: Ryan http://blogs.discovermagazine.com/80beats/2009/10/28/researchers-spot-an-ancient-starburst-from-the-universes-dark-ages/#comment-13132 Ryan Thu, 29 Oct 2009 02:35:53 +0000 http://blogs.discovermagazine.com/80beats/?p=4987#comment-13132 Space does not have to expand at the speed of light in order for this phenomenon to exist. If you have two points, all of the space between these two points still expands. This can have the effect of increasing the total distance between the two objects at a rate greater than the speed of light. This is not the case here (the light just ends up extremely red-shifted). Anyway, your question contains a supposition; that space itself cannot move at the speed of light. I think that is the ultimate endgame of the universe. However, when when space does expand at this rate, none of the force carriers from any particle will be able to reach another particle: no gravity, no light, no atoms, just lonely particles. Space does not have to expand at the speed of light in order for this phenomenon to exist. If you have two points, all of the space between these two points still expands. This can have the effect of increasing the total distance between the two objects at a rate greater than the speed of light. This is not the case here (the light just ends up extremely red-shifted).

Anyway, your question contains a supposition; that space itself cannot move at the speed of light. I think that is the ultimate endgame of the universe. However, when when space does expand at this rate, none of the force carriers from any particle will be able to reach another particle: no gravity, no light, no atoms, just lonely particles.

]]> By: Buzz Lightyear http://blogs.discovermagazine.com/80beats/2009/10/28/researchers-spot-an-ancient-starburst-from-the-universes-dark-ages/#comment-13131 Buzz Lightyear Thu, 29 Oct 2009 01:22:12 +0000 http://blogs.discovermagazine.com/80beats/?p=4987#comment-13131 Despite of my name I am not an astro-anything ;) My noob question is this: If the universe when only 0.7 billion years old (in this case) and were packed much much denser than present, why would it take 13B years for the light from the GRB explosion to reach us? Is/was the rate of inflation magnitude faster than E=MC^2 which is not supposed to be possible, right? Is it because the source of the GRB and the Earth are at the edge of this inflating "balloon"? OK, wise guys. I can spend a day in Wikipedia reading about the Universe's Inflation Theory, etc, etc. I just want to ask some really wise people here that are astro-somethings. :p Despite of my name I am not an astro-anything ;)

My noob question is this: If the universe when only 0.7 billion years old (in this case) and were packed much much denser than present, why would it take 13B years for the light from the GRB explosion to reach us? Is/was the rate of inflation magnitude faster than E=MC^2 which is not supposed to be possible, right? Is it because the source of the GRB and the Earth are at the edge of this inflating “balloon”?

OK, wise guys. I can spend a day in Wikipedia reading about the Universe’s Inflation Theory, etc, etc. I just want to ask some really wise people here that are astro-somethings. :p

]]> By: yo mama http://blogs.discovermagazine.com/80beats/2009/10/28/researchers-spot-an-ancient-starburst-from-the-universes-dark-ages/#comment-13130 yo mama Wed, 28 Oct 2009 23:01:51 +0000 http://blogs.discovermagazine.com/80beats/?p=4987#comment-13130 oh come one...that was so easy and yet you missed it... "talk about a blast from the past..." sigh oh come one…that was so easy and yet you missed it… “talk about a blast from the past…”

sigh

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