@AndrewAskwith@neiltyson Anti protons, and anti neutrons. These have already been discovered by using very large particle accelerators. To be honest these particles may make up the future of space travel because the energy produced from matter and antimatter colliding is extremely efficient.
@AndrewAskwith@neiltyson If you want to understand the possibilities of parallel universes look into string theory. String theory proposes the idea of a multiverse in which our universe sits in a collection of many. I bet that article states that they found anti-matter particles such such as positrons
A simple retweet could help pay for the expenses of traveling that it took to make this calendar 😅 You can get it at https://t.co/5FX8wXB6pT if you’re interested! Anything helps! :)