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Gravitational waves - finally, The topic cover Big bang, inflation and the CMB
TheAnt
post Mar 18 2014, 12:00 PM
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Ripples in the CMB finally show the effect of the cosmic inflation, a holy grail of cosmology and one achievement for the scientists involved.
In a double score it also give further support for the idea of inflation and gravity waves in the first moment after the big bang.

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dvandorn
post Mar 22 2014, 01:27 PM
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How to say this correctly, here...

One of the things that really fascinates me about cosmology is how we have a somewhat self-consistent mathematical model for the Big Bang which postulates "the fabric of spacetime" inflating at speeds far faster than C, and how it can be flat or curved, locally bent, even completely ingested into gravitational point sources. And yet we have no description or model, really, of exactly what the "fabric of spacetime" actually is, the mechanisms by which it can inflate, be distorted by mass, etc. We have macro- and micro-models of "reality" that don't mesh, either conceptually or mathematically, and the abyss that lies between must be where these mechanisms are hiding from our view.

Physics, as far as it has progressed in the past century or so, is now to the point where it can ask basic, cogent questions. But it's not yet to the point where they can be answered.

An exciting time to be alive, eh?

-the other Doug


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“The trouble ain't that there is too many fools, but that the lightning ain't distributed right.” -Mark Twain
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djellison
post Mar 22 2014, 03:38 PM
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QUOTE (dvandorn @ Mar 22 2014, 05:27 AM) *
How to say this correctly, here...


If you have to ask that question - why are you posting it?
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Posts in this topic
- TheAnt   Gravitational waves - finally   Mar 18 2014, 12:00 PM
- - Vultur   Cool! (Now they just need to actually get one...   Mar 20 2014, 01:50 AM
|- - TheAnt   QUOTE (Vultur @ Mar 20 2014, 02:50 AM) So...   Mar 20 2014, 02:53 PM
- - centsworth_II   My recollection from having read Alan Guth's...   Mar 20 2014, 06:31 AM
- - Gerald   Inflation is mainly needed to explain the flatness...   Mar 20 2014, 11:12 AM
|- - AndyG   QUOTE (Gerald @ Mar 20 2014, 11:12 AM) Mu...   Mar 25 2014, 10:26 AM
- - Vultur   OK, thank you! So there is still thought to h...   Mar 21 2014, 05:57 AM
- - Gerald   In the strict sense, yes. The sequence of the fir...   Mar 21 2014, 12:35 PM
- - Vultur   Ah - thank you again!   Mar 21 2014, 11:51 PM
- - TheAnt   @Vultur Yes and no, the original Big bang theory d...   Mar 22 2014, 12:11 PM
- - dvandorn   How to say this correctly, here... One of the thi...   Mar 22 2014, 01:27 PM
|- - djellison   QUOTE (dvandorn @ Mar 22 2014, 05:27 AM) ...   Mar 22 2014, 03:38 PM
|- - TheAnt   QUOTE (dvandorn @ Mar 22 2014, 02:27 PM) ...   Mar 22 2014, 04:10 PM
- - MarsInMyLifetime   It is an interesting conundrum, Doug. I am no cosm...   Mar 22 2014, 03:40 PM
- - Doug M.   So, looking at the image: http://regmedia.co.uk/2...   Mar 25 2014, 09:02 AM
- - centsworth_II   If we're going to talk multiverse and many wor...   Mar 25 2014, 12:14 PM
- - centsworth_II   My job here is done.   Mar 25 2014, 05:32 PM
- - Holder of the Two Leashes   Some doubts about all this ... Physical Review Le...   Jun 23 2014, 03:28 PM
- - Gerald   Let's wait for the corresponding Planck papers...   Jun 23 2014, 04:11 PM
- - Gerald   A Joint Analysis of BICEP2/Keck Array and Planck D...   Feb 7 2015, 01:14 PM
- - TheAnt   QUOTE (Gerald @ Feb 7 2015, 02:14 PM) A J...   Feb 7 2015, 05:44 PM
- - fredk   QUOTE (TheAnt @ Feb 7 2015, 05:44 PM) Yes...   Feb 7 2015, 08:00 PM
- - TheAnt   Thank you for your nice reply fredk. =) A careful...   Feb 8 2015, 11:53 AM
- - fredk   QUOTE (TheAnt @ Feb 8 2015, 11:53 AM) The...   Feb 8 2015, 04:15 PM
- - Astro0   ADMIN: This topic has run afoul of forum rule 2.6 ...   Feb 8 2015, 07:03 PM


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