Possible patterns of a universe anisotropic. Saadeh et al
If on a clear night look up at the sky, one thing can be sure: the universe covering his eyes is expanding uniformly in all directions. There is No preference given.
This, a principle of the cosmology, was corroborated by a study published in Physical Review Letters which studied the cosmic microwave background radiation, the remnant radiation of the Big Bang.
For Daniela Saadech, first author of the article, "the finding is the best evidence that the universe is the same in all directions. The current understanding of this is based on the assumption that it does not prefer one direction over another, while there are a number of ways in which the Theory of Relativity would allow the space did not have this balance. Universes that spin and stretch as is possible, so it is important to what we have shown".
The researchers used measurements of the radiation taken between 2009 and 2013 by the Planck satellite of the european space agency, which recently gave information about the polarization of the background radiation across the sky, presenting a complementary vision of the universe, primeval.
Daniela explained that they calculated the different patterns that would be seen in the radiation if the space has different properties in different directions.
Then, explained co-author Stephen Feeney, compared predictions with reality, a daunting task considering the high number of modes in which the universe may be anisotropic.
Daniela explained that it cannot be ruled out completely, but the probability that the universe prefer one direction to the other is 1 en121 000.
P. D.: Some calculations (Space.com) suggest that the size of the universe is 92 000 light years. And although we may think that we are in the center, it is not so, and, before, we do not know exactly what is our location in such immensity.
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