Analysis of the byproducts of these collisions gives scientists good evidence of the structure of the subatomic world and the laws of nature governing it.
Such stars are composed almost entirely of neutrons, which are subatomic particles without net electrical charge and with slightly larger mass than protons.
In order to achieve the subatomic part of the duet, radioactive material (radium 225) is placed into a cloud chamber, a device used by physicists to observe particle trails.
