ManifestDragon

What I mean is how did scientists figure out the width of our galaxy (in light-years) or how far away Proxima Centauri is? Thanks.

There is a theory where there was the slightest bit more of matter at the beginning of our universe than anti-matter. Some scientists believe that universes pop up very quickly, but less than around 10^(-30) percent have had a slight oddity that caused either more antimatter or matter to exist. The universes full of anti-matter could come in contact with universes full of matter and explode. Even though 10^(-30) percent is obviously a very, very tiny number, a universe-sized glob of anti-matter exploding will probably cause more energy to be created than all the energy in our universe today. This would cause more universes to pop up, causing more explosions. But, it is also very unlikely universes will bump into each other. Who knows? Maybe when they touch, the explosions only travel across the universe at the speed of light, which could take very, very long, considering that it would take around 200 million ot 400 million years for light to go across our galaxy. All your theories are fascinating, and who knows what the truth is? Cool This is possible though

Talk and ask about anything that relates to these fields! Hello everyone! This forum should include anything from questions to homework. Hopefully you all will enjoy it!