a large machine that does physics experiments with particles a particle accelerator to state in a court of law that you are responsible for a crime to plead guilty the lawyers who try to prove someone is guilty of a crime the prosecution a particle of light a photon representing something but having no practical meaning by itself symbolic a system of millions of stars a galaxy a ball of ice and dust that travels in space a comet to change from bright to less bright and back again, like stars appear to do when we look at them to twinkle https://339efcb25eb75e967b0d-ff8eeadd950d51fd1fc939dca75b3973.ssl.cf1.rackcdn.com/assets_default.swf