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Showing posts with the label #universe

Dark matter does not exist and the universe is 27 billion years old: A Study Report

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    Dark matter does not exist and the universe is 27 billion years old: A Study Report According to a groundbreaking proposal by theoretical physicist Rajendra Gupta of the University of Ottawa in Canada, fossilized sound waves in maps of galaxies across the universe can be interpreted as signs of a Big Bang that occurred much earlier than previously thought. Gupta's theory challenges current understanding of the age and composition of the universe, suggesting a radical reevaluation of fundamental concepts such as dark matter and dark energy. Gupta's research indicates that the accepted age of the universe, about 13.7 billion years, may be an illusion due to the way we understand cosmic structures and their evolution over time. His analysis, based on previous work, suggests that the true age of the universe may be significantly older, around 26.7 billion years, eliminating the need for dark matter to explain some phenomena. In conventional cosmology, the accelerated exp...

Testing alternate cosmology using a cloud of atoms

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             Testing alternate cosmology using a cloud of atoms While direct experimentation with the Universe remains beyond our reach, scientists have devised a method to replicate its early conditions. At the Kirchhoff-Institut für Physik in Germany, researchers have constructed a tabletop quantum field simulation mimicking the post-Big Bang Universe. This simulation involves manipulating a sample of potassium-39 atoms near absolute zero using magnets and lasers. By employing equations, they extrapolate findings at this miniature scale to explore potential characteristics of the early Universe. Preliminary results indicate the feasibility of simulating a Universe with varied curvatures. In a positively curved Universe, traversing any direction in a straight line leads back to the starting point, while a negatively curved Universe exhibits a saddle-shaped space. Marius Sparn, a PhD student at Kirchhoff-Institut für Physik, notes that the current Univ...

Scientists have verified an essential property of black holes

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  Scientists have verified an essential property of black holes The research team conducted an analysis of data from the most massive black hole merger ever recorded. Black holes, characterized by their mass and angular momentum, are remarkably simple entities compared to the more intricate matter distributions found in stars or planets. These mysterious cosmic entities emit a unique gravitational wave spectrum with distinct frequencies that gradually decay over time. When two black holes merge, the final phase of gravitational wave emission manifests as a mixture of rapidly damped sinusoids. The black hole no-hair theorem, an important property governing black holes, postulates that the quasi normal mode spectrum of a black hole should be highly constrained. This is because only two parameters, mass and spin, are expected to determine the entire spectrum. A global team of researchers from Radboud University has validated this fundamental characteristic of black holes thro...