string theory

String theory is a type of physics that tries to explain how the universe works. It is based on the idea that tiny strings vibrate at different frequencies to make up everything in the universe – from subatomic particles to galaxies. For example, a guitar string vibrates at different frequencies to make different notes. In string theory, these strings vibrate and make up all the particles and forces in the universe. A fun fact about string theory is that it has been around since the 1960s, but it wasn’t until the 1980s that scientists began to pay serious attention to it.