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According to Space.com (This article and its images were originally posted on Space.com September 30, 2018 at 07:53AM.)
Does our universe exist in more than just three dimensions?
Probably not on large scales, according to new research published July 23 in the Journal of Cosmology and Astroparticle Physics. The study found that across vast distances in space, the universe likely operates in just the dimensions we experience on Earth. The results are also helping scientists better understand the puzzling nature of dark energy, the mysterious phenomenon behind the accelerating expansion of the universe.
In October 2017, scientists used the Laser Interferometer Gravitational-Wave Observatory (LIGO) to detect a gravitational wave produced in the collision of two neutron stars. Dubbed GW170817, the event was also seen with traditional telescopes, allowing the scientists to simultaneously study the occurrence via gravitational waves and light waves. The dual measurements are allowing scientists to learn all sorts of things about our universe, including how many dimensions it might hold. The new results also offer additional evidence for Albert Einstein’s general relativity. [8 Ways You Can See Einstein’s Theory of Relativity in Real Life]
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