string theory

String Theory is a type of theory that helps explain how the universe works. It says that all the particles and forces that make up the universe are made of tiny vibrating strings. The strings are so small that we can’t see them. Think of the strings like the strings on a guitar. Different notes can be played by plucking the strings. In the same way, different particles and forces can be made by vibrating the strings. String Theory helps scientists explain things like why gravity is so weak compared to the other forces, or why there are so many particles. It also helps us understand why the universe looks the same in all directions, which is something that we don’t see in our everyday lives. Fun Fact: String Theory was first proposed by a physicist named Michio Kaku in the 1970s!