History of April 22

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History of April 22

1056 Supernova Crab nebula last seen by the naked eye
Supernova-Crab-nebula-last-
1500 – Portuguese navigator Pedro Alvares Cabral discovered Brazil.
Portuguese-navigator-Pedro-
1823 R J Tyers patents roller skates
R-J-Tyers-patents-roller-sk
1838 English steamship “Sirius” docks in NYC after crossing the Atlantic, first transatlantic steam passenger service
English-steamship-Sirius-do
1969 1st human eye transplant performed
1st-human-eye-transplant-pe
1970 1st Earth Day held internationally to conserve natural resources
1st-Earth-Day-held-internat

By: Archa Dave

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