1773 (MDCCLXXIII), she blein chadjin v'ee, ghow toshiaght Jeheiney rere yn eaillere Gregoiragh.
Taghyrtyn
17 Jerrey Geuree – Nah varrinys James Cook: Haink y Captan James Cook ayns HMS Resolution dy ve ny chied ronseyder Oarpagh goll tessen Kiarkyl yn Antarctagh.
4 Mean Souree – Hie turrys-contoyrtys Phipps 1773 dys Ard y Twoaie magh veih'n Vretyn Vooar.
13 Jerrey Fouyir – Ren y ronseyder Frangagh Charles Messier feddyn magh Co-rollageys y Cluggan, co-rollageys eddyr-obbraghey, caslagh lesh kiaddey mooar ta soit mysh 31 villioon dy hollys-vleeantyn ayns co-hollys rollageagh ny Moddee Feie.
14 Jerrey Fouyir – Ta Komisja Edukacji Narodowej (Polynnish ry hoi "Commishoon cour Ynsaghey yn Theay"), va bunnit ayns Co-unnaneys y Pholynn–Litaan, coontit myr y chied rheynn ynsee 'sy theihll.
16 Nollick – Cooish Hey Boston: Ren possan dy choloinee Americaanagh, ayns coamraghyn Mohawkagh, sleetçhal er boayrd lhongyn Cholught yn Injey Hiar as cheau ad ny lughtyn tey harrish boayrd stiagh ayns Boston Harbor myr çhionnraa noi polaseeyn keesh ny Goaldee.
Ruggyryn
29 Jerrey Geuree – Friedrich Mohs, creg-oayllee as meain-oayllee Germaanagh (b. 1839)