Radiation can cause Extreme environments.
 This includes:electromagnetic radiation, such as radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and gamma radiation ()particle radiation, such as alpha radiation (), beta radiation (), proton radiation and neutron radiation (particles of non-zero rest energy)acoustic radiation, such as ultrasound, sound, and seismic waves (dependent on a physical transmission medium)gravitational radiation, that takes the form of gravitational waves, or ripples in the curvature of spacetimeRadiation is often categorized as either ionizing or non-ionizing depending on the energy of the radiated particles
 High enough levels of any kind of radiation will eventually become lethal, however

