Successes and Challenges of Lambda-CDM

Aug 27, 2014 ... Inflation certainly occurs after the cosmological singularity, but before several important events of the Big Bang. In other words, the ... Apr 12, 2020 ... Cosmologist Alexander Vilenkin believes the Big Bang wasn't a one-off event, but merely one of a series of big bangs creating an endless number of bubble ... Sep 6, 2023 ... Cosmologists call this a singularity. What was the universe like at the beginning of the big bang? According to the theory, it was extremely ... Dec 2, 2018 ... What existed before the big bang? Did something have to be be there in order to go boom? – Ethan, 10, Sydney. Ethan, what a question. To ... Jan 29, 2025 ... The Big Bang Theory stands as the most widely accepted explanation for the origin of the universe. According to this theory, the universe began as an ... Jan 27, 2023 ... There was the singularity or the pre big bang mass before the big bang. The mass of the singularity or the pre big bang mass was equal to say 99 ... Aug 18, 2010 ... For example: What happened before the 'big bang'? Paul Davies' reply is: 'According to modern physics, the big bang represented the origin ... Mar 6, 2023 ... How would atheists explain this existence?” Well, before the Big Bang, all the matter and energy already existed, but in a much smaller, denser ... There is no 'at the same time as' until the universe has differentiated to the point where one event can be temporally related to other events via an observer. Apr 8, 2011 ... Not knowing what came before the Big Bang doesn't stop physicists from theorizing. In the eternal inflation scenario, the known universe bubbled out of a ...