deletions | additions       diff --git a/untitled.tex b/untitled.tex  index 2ad91fb..6f7f0e6 100644  --- a/untitled.tex  +++ b/untitled.tex 
...
On 17 March 2014, the BICEP2 collaboration announced the first detection of so-called B-mode polarization, a possible signature of the exponential expansion of space in the early universe. This expansion, also called inflation, is believed to have lasted from $10^{-36}$ seconds after the Big Bang to sometime between $10{−33}$ $10^{−33}$  and $10{−32}$. $10^{−32}$.  Inflation is thought to be resposible for the existence of large-scale structures and to explain why the universe appears statistically homogeneous and isotropic\footnote{Meaning that at large scales the properties of the universe are the same for all observers}.  But was it really a swift-crawlying baby-universe what BICEP2 observed? Or something more mundane as the effect of Galactic dust? To collect the elusive signal of the Big Bang (the CMB, cosmic microwave background) with their South Pole telescopes, BICEP2 had to look through the window glass of our Galaxy. And it turned out that this window is not as clean as previously thought, the dirt being small dust particles. These particles modifiy a particular property of light called polarization, which incidentally is the same proxy used to detect the existence of an inflation period. So the B-mode polarization could either be imprinted on the CMB right after the Big Bang, about 13.5 billion years ago, by inflation. Either been added to the CMB by the presence of dust as this ancient light passes through our local Galaxy, the Milky Way, before reaching our telescopes.