A synchrotron is a big machine that shoots really fast particles called electrons in a circle. The electrons are pushed by magnets to go faster and faster until they're going almost as fast as light. When they're going this fast, they start to give off energy in the form of light, which we call synchrotron radiation.
This light is very special because it's very bright and can be used to look at things that are too small to see with our eyes, like viruses and molecules. Scientists use it to study all sorts of things, from new medicines to how our universe formed.
Inside the synchrotron, there are lots of different parts that work together to make sure the electrons keep going in a circle and don't crash into anything. This is important because crashing can make the electrons lose energy and slow down, which would mess up the experiments.
Scientists can also use the synchrotron to make X-rays that are much stronger than regular X-rays you might get at the doctor. These strong X-rays help doctors and scientists see inside things like our bodies or rocks to learn more about them.