irregular natural phenomenon in the sky
Refers to unusual or abnormal celestial or atmospheric events, such as comets, eclipses, or strange weather patterns. Often used in historical or literary contexts.
People in the past considered irregular celestial phenomena to be omens of misfortune.
natural disaster; cataclysm
natural disaster
Compound of 天 (ten, 'sky, heavens') and 変 (hen, 'change, unusual'). The reading てんぺん is a standard on'yomi combination.