Alpha particle

An alpha particle is like a tiny little ball made up of two protons and two neutrons. Imagine it as a really small superhero team that sticks together really well. They are so small that you can't see them with your eyes or even look at them with a microscope. These alpha particles like to fly around and are produced in things like the sun and even in some rocks. Sometimes, they can be dangerous if we breathe them in, but scientists can use them to help study things like cancer and other diseases.