Scientists Say The Universe Expands In A Uniform Manner

Admin | Published 2016-10-01 08:40
According to researchers from the Imperial College London and the University College London, the Universe is not stretched out wards or spinning in any particular direction. We see a clumped Univers with planets orbiting stars in systems, stars in turn group into galaxies, then galaxies form clusters. Despite what we see, cosmologists think this effect is only local,  if we look on very large scales, the Universe is believed to be uniform.

The Direction-less Universe | Sci-News.com

  Majority of the calculations made about our Universe start with the assumption that the it is broadly the same, wherever your point of view is. However, if the Universe was stretching favorably in a single direction, or spinning on an axis in a like the way the Earth is rotating, this essential assumption, and with all the calculations that pivot on it, would be devastatingly be wrong. The research team led by scientist Daniela Saadeh, University College London, has put this hypothesis through its most severe test yet. They found that only 1 in 121,000 chances that our Universe is the same pointing in all directions, Sci-News reports.
“The finding is the best evidence yet that the Universe is the same in all directions,” Dr. Saadeh said. “Our current understanding of the Universe is built on the assumption that it doesn’t prefer one direction over another, but there are actually a huge number of ways that Einstein’s theory of relativity would allow for space to be imbalanced. Universes that spin and stretch are entirely possible, so it’s important that we’ve shown ours is fair to all its directions.”
What was used on the study was CMB or Cosmic Microwave Background — the remnant light resulting from a time when our Universe was young, hot, and dense, at only 380,000 years after the incidents of the Big Bang —between 2009 and 2013 from ESA’s Planck satellite. Scientists recently released data about the CMB’s polarization across the sky for the first time, giving a complementary vision of the premature Universe that the group was able to exploit. Saadeh and team modeled a complete variety of rotating and stretching states and how these may manifest in the CMB, that includes its polarization. They then associated their results with the actual map of the cosmos, searching for precise signs in the data.
“We calculated the different patterns that would be seen in the cosmic microwave background if space has different properties in different directions,” Dr. Saadeh said. “Signs might include hot and cold spots from stretching along a particular axis, or even spiral distortions.”
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