Consists of electric and magnetic disturbances, or waves, that travel through space. human eyes see one form of this energy, called all forms of electromagnetic radiation, including x-rays and radio waves, make up the each type of radiation can be classified in two ways. the distance between the peaks on a wave and is the number of waves that occurs each second. scientists study radiation with telescopes which collect and focus light. the - the opening that gathers light in a telescope, the more light that can be collected.