General Covariance

Oct 5, 2023 ... Essentially, the universe came into existence kicking and screaming where it was both extremely hot and extremely dense, but also started ... Dec 10, 2008 ... ... the universe. As its equations cannot cope with such infinities, general relativity fails to describe what happens at the big bang. Jun 30, 2007 ... The idea that the universe erupted with a Big Bang explosion has been a big barrier in scientific attempts to understand the origin of our expanding universe. ... big bang cannot tell us what happened before 10-43 seconds, or for that matter, what happened before zero seconds—or why the laws of physics are what they are. Nov 23, 2010 ... Image credit: Gurzadyan and Penrose. (PhysOrg.com) -- In general, asking what happened before the Big Bang is not really considered a science ... The Big Bang should have created equal amounts of matter and antimatter. So ... One of the greatest challenges in physics is to figure out what happened ... Apr 22, 2020 ... In this scenario, the horizon is defined as how far observers can see before the bounce occurs. “The distance that light can propagate before ... May 24, 2019 ... Professor Hiranya Peiris (UCL Physics & Astronomy) discusses the origins of the universe, and how the science fiction author Arthur C Clarke ... Jun 23, 2024 ... What Came Before the Big Bang? By studying the geometry of model space-times, researchers offer alternative views of the universe's first ... Horizon takes the ultimate trip into the unknown, to explore a dizzying world of cosmic bounces, rips and multiple universes, and finds out what happened before ...