Early universe Definition and 112 Threads

The chronology of the universe describes the history and future of the universe according to Big Bang cosmology.
The earliest stages of the universe's existence are estimated as taking place 13.8 billion years ago, with an uncertainty of around 21 million years at the 68% confidence level.

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  1. E

    Who was there to observe the early universe?

    I have been reading Jim Al-Khalili's book, Quantum: A Guide for the Perplexed, and in chapter 5, on page 122, the author suggested that perhaps the moon slips into quantum uncertainty when no one is observing it. If this is neccessary, then what happened to the early universe? Surely there...
  2. Loren Booda

    The role of exotic resonances in the early universe

    Did the era prior to decoupling experience abundant particle resonances that are now rare? Were there then composite and stable entities, like atoms, constructed from these particles? What would the lifetimes of the resonances be, given that their optimum surrounding conditions remained...
  3. L

    Why does higher density of the early universe result in a faster expansion rate?

    I heard from a TV program that higher density of the early universe resulted in a faster expansion rate, and the lower density of the present universe has a lower expansion rate. Could anyone please expalin to me why? Thanks =)
  4. C

    Seeing light from early Universe

    Can anybody explain to me how our telescopes are able to capture images/light from the early universe (just after the big bang)? Every time there is an article that claims this, I scratch my head. I'd like to hear if someone has a "simple" explanation to this. Because I think the light...
  5. wolram

    Reionization: A Primer on Early Universe Physics

    This is not a paper, but may be of interest for anyone into reionization. http://highz.ita.uni-heidelberg.de/pdf-files/Haiman.pdf
  6. S

    Gravitational Waves of Early Universe

    Was the moment of 'first-light' or 'Lights-on' which occurred in the early Universe when Matter started to Shine 'light from the first galaxies', equivilent to the first Gravitational Wave signature from the Big-Bang? If one was do insinuate that the first primordial outward 'inflation' wave...
  7. Y

    Big Bang Article - Early Universe more Fluid like

    Interesting experiment http://www.usatoday.com/tech/science/discoveries/2005-04-19-big-bang-mystery_x.htm
  8. DrChinese

    Black Holes in the Very Early Universe

    The Schwarzschild Radius (R) is proportional to the mass M of the structure in question, and not its density. Let's suppose that the R(sun)=2 km for the sake of argument. And further let's suppose that if an amount of matter equal to our sun - M(sun) - is confined within a 2 km radius, it can...
  9. R

    Quark confinement in early universe

    When the universe expanded so that the quarks in it reached a separation of 10^-15 metres, did quark confinement create new quarks,and if so, what proportion of the quarks that galaxies are made of, were created by confinement?
  10. C

    Exploring the Theory of Inflation in the Early Universe: A Mind-Bending Concept

    I am struggling to come to terms with the theory of inflation. The figures I've been presented with mean that the Universe for a very short time expanded at a speed much greater than the speed of light. Is that possible?
  11. wolram

    The Discovery of a Z=10 Galaxy: Implications for the Early Universe

    thanks to MARCUS. this discussion started in S B and LQG, i thought i had better move to a more appropriate place. the recent discovery of a Z=10 galaxy, if confirmed means it was was formed when our universe was only 500MYs old. this paper discuses the discovery...
  12. E

    Theory expressing the creation of matter in the early universe

    Einstein Solution c(n)*(1*1.001/1)*v*n=L=v*n=LW=v*(n-l^2)=LWH=v*(n-l^3)=LWHV The point of this equation is to represent the un-assisted method for the creation of matter in the early universe. Everything starts out as nothing. Nothing is made of imaginary particles. Imaginary...
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