Go to https://ground.news/startalk to stay fully informed on the latest Space and Science news. Save 40% off through our link for unlimited access to the Vantage plan this month. What is antimatter? Neil deGrasse Tyson and Chuck Nice break down what antimatter is and how our matter-based universe came to be. What happens when matter and antimatter annihilate? We break down positrons and the anti-quarks that makeup anti-neutrons. Is there an opposite universe where everything is antimatter? Plus, learn about energy mass conversion and its role in how our universe came to be.