Modifiers matching occurrence:

• unforeseen,
• outdoor,
• miscellaneous,
• seismic,
• natural,
• political,
• accidental,
• interesting,
• elemental,
• abnormal,
• unusual,
• deadly,
• unexpected,
• meaningful,
• dangerous,
• unpredictable,
• catastrophic,
• localised,
• unlikely,
• infrequent,
• dramatic,
• inanimate,
• unfortunate,
• small,
• damaging,
• musical,
• internal,
• sudden,
• special,
• unplanned,
• superficial,
• astronomical,
• terrifying,
• commonplace,
• operational,
• medical,
• periodic,
• supernatural,
• major,
• geologic,
• stressful,
• normal,
• external,
• interactive,
• benign,
• spontaneous,
• ordinary,
• seasonal,
• recent,
• random,
• unanticipated,
• adverse,
• positive,
• planned,
• serious,
• disruptive,
• unforeseeable,
• harmful,
• uncertain,
• neurological,
• unique,
• costly,
• annual,
• awesome,
• organizational,
• autonomic,
• everyday,
• happy,
• odd,
• geographical,
• deviant,
• devastating,
• possible,
• undesirable,
• routine,
• violent,
• specified,
• transient,
• cosmic,
• extraordinary,
• neurologic,
• simple,
• criminal,
• disastrous,
• relevant,
• discrete,
• exogenous,
• untoward,
• irregular,
• severe,
• rare,
• common,
• weather,
• cataclysmic,
• future,
• negative,
• motivational,
• significant,
• dynamic,
• unwanted,
• strange,
• traumatic,
• single,
• social,
• outside,
• historical,
• exceptional,
• acoustic,
• tragic,
• local,
• temporary,
• unpleasant,
• climatic,
• environmental,
• unavoidable,
• corporeal,
• physical,
• extreme,
• hazardous,

Simple categories matching astronomical:

• catastrophe,
• hazard,
• object,
• event,
• research,
• equipment,
• project,
• body,
• data,
• symbol,
• matter,
• apparatus,
• thing,
• phenomenon,
• instrument,
• quantity,
• system,
• concept,
• feature,
• hardware,
• patch,
• structure,
• happening,
• subject,
• information,
• occurrence,
• cycle,
• time,