What do cosmologists mean when they say Big Bang? Perhaps not what we think. The Big Bang poster is available here: null There are many descriptions of the big bang out there that are wrong. Anything that says the universe exploded from an infinitely small, dense and hot point, known as a big bang singularity, are out of date, but I’ve seen this description in many places on the internet and diagrams. I’ve even been guilty of saying this too! But I’ve recently updated my understanding, so here is what cosmologists actually mean when they say big bang. Special thanks to Katie Mack for some cosmology help: https://twitter.com/AstroKatie #space #bigbang #DomainOfScience Human Errors: 1. I got the time that matter and antimatter annihilation happened. I should have said it happened within the first second instead of the first few minutes. - Some Awesome People -- And many thanks to my $10 supporters on Patreon, you are awesome! Theodore Chu Sebastian Join the gang and help support me produce free and high quality science content: https://www.patreon.com/domainofscience #bigbang #space #physics -- Posters --- DFTBA Store: null RedBubble Store: https://www.redbubble.com/people/DominicWalliman Help me make amazing science videos on Patreon: Patreon: https://www.patreon.com/domainofscience I have also made posters available for educational use which you can find here: https://www.flickr.com/photos/95869671@N08/ -- My Science Books --- I also write science books for kids! You can see them all here: http://profastrocat.com/ -- Follow me around the internet, wait that sounds weird -- http://dominicwalliman.com/ https://twitter.com/DominicWalliman https://www.instagram.com/dominicwalliman https://www.facebook.com/domainofscience