Ключевые слова: abstract, atom, atomic, background, badge, blue, caution, contaminate, contaminated, danger, deterrent, disaster, energy, fission, hazard, icon, light, milky way, night, night sky, nuclear, nuke, physics, plutonium, pollutant, pollution, power, radiation, radiation sign, radiation symbol, radioactive, radioactivity, ray, reactor, research, roentgen, safety, science, shiny, sign, sky, space, star, starlight, starry, stars, symbol, threat, uranium, warn,