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Was the Big Bang really the start of everything?
Did the universe exist before the Big Bang?
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How did the universe change before and after the Big Bang?
Jan 5, 2022 · These came into existence around one ten-thousandth of a second after the Big Bang. Before that point, there was really no material in any familiar sense of the word.
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Scientists have a really good picture of the very early universe, something we know and love as the Big Bang theory. In this model, a long time ago the universe was far smaller, far hotter and far denser than it is today. In that early inferno 13.8 billion years ago, all the elements that make us what we are were formed in the span of about a dozen...
The problem is that the physics that we use to understand the early universe (a wonderfully complicated mishmash of general relativityand high-energy particle physics) can take us only so far before breaking down. As we try to push deeper and deeper into the first moments of our cosmos, the math gets harder and harder to solve, all the way to the p...
As cool as this sounds, early versions of the cyclic model had difficulty matching observations — which is a major deal when you're trying to do science and not just telling stories around the campfire. The main hurdle was agreeing with our observations of the cosmic microwave background, the fossil light leftover from when the universe was only 38...
For a general overview of the Big Bang theory, check out "Your Place in the Universe" by Paul M. Sutter, which covers the history of the development of the theory alongside the history of the universe itself. The PBS Spacetime video series has a great video exploring the options for what may have caused the Big Bang. Another video, published by the...
Sep 6, 2023 · Based on Einstein's work, Belgian cosmologist Rev. Georges Lemaître proposed in 1927 that the universe started as a singularity and expanded through the Big Bang [source: Soter and Tyson ]. According to Einstein's theory of relativity, time only came into being as the primordial singularity expanded toward its current size and shape.
Apr 17, 2019 · It's possible that before the Big Bang, the universe was an infinite stretch of an ultrahot, dense material, persisting in a steady state until, for some reason, the Big...
Aug 1, 2014 · Spacetime atoms are the smallest indivisible units of space and time, and they may have been present at the big bang singularity, where the universe had an infinite density and temperature. Learn how quantum-gravitational effects can explain the existence of spacetime atoms and how they may be detectable in the cosmos.
What was before the Big Bang? Everything you need to know - BBC Science Focus Magazine.
Was the big bang really the start of everything? A form of 'nothing' came before the big bang. But what if 'nothing' actually meant something? A vacuum chamber has been made by NASA to try and recreate a state of total nothingness. In this space, they have pumped out the air, and frozen every remaining molecule to make a near-perfect vacuum.
