🌐EnglishEnglishDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsSvenskaTiếng ViệtРусскийالعربيةفارسی中文日本語EntityQ928051· pop 23· linked from 153 articlesPalermo Technical Impact Hazard Scalemeasure of hazard posed by near-Earth objectsConnectionsNASAConceptPalermoEntityCategoriesAlert measurement systemsHazard scalesLogarithmic scales of measurementPlanetary defense