String cosmology is kind of like when you play with a really long piece of spaghetti. You know how you can twist it around and make different shapes? Scientists who study string cosmology are trying to use those same kinds of twists and shapes to help explain how our universe works.
In string cosmology, the spaghetti-like strings represent tiny, tiny particles that are too small for us to see with our eyes. These strings can vibrate and move in different ways, and scientists think that the way they move can help explain some of the biggest mysteries of the universe, like how it was formed and what makes it expand.
One of the big ideas in string cosmology is something called the "cosmic landscape." Just like how there are lots of different shapes you can make with a piece of spaghetti, scientists think that there are lots of different possible "shapes" or configurations of the strings in our universe. Each of these shapes might represent a different "universe," each with its own unique set of physical laws and properties.
Scientists studying string cosmology try to use math and physics to understand how these shapes might exist and interact with each other. They hope that by understanding these shapes, they'll be able to answer some of the big questions about the universe and maybe even find ways to test their theories through experiments and observations.