Explore 2 historical events from 760–769.
Halley's Comet is the only known short-period comet that is consistently visible to the naked eye from Earth, appearing roughly every 75–76 years, though with the majority of recor…
Fourteenth recorded perihelion passage of Halley's Comet
Abū Muḥammad Mūsā ibn al-Mahdī al-Hādī better known by his laqab al-Hādī (الهادي) was the fourth Abbasid caliph who succeeded his father al-Mahdi and ruled from 169 AH until his d…
Al-Hadi, Abbasid caliph (died 786)
Abū Muḥammad Mūsā ibn al-Mahdī al-Hādī better known by his laqab al-Hādī (الهادي) was the fourth Abbasid caliph who succeeded his father al-Mahdi and ruled from 169 AH until his d…
Al-Hadi, Abbasid caliph (died 786)
Halley's Comet is the only known short-period comet that is consistently visible to the naked eye from Earth, appearing roughly every 75–76 years, though with the majority of recor…
Fourteenth recorded perihelion passage of Halley's Comet