1903
Transportation
United States
Powered heavier-than-air flight
The Wright brothers achieve controlled, sustained flight at Kitty Hawk.
Why it mattered
Three-axis control, not just lift, made aviation possible.
Modern Era
1903
2 recorded milestones at this point in the record.
1903
Science
France and Poland
Marie Curie and radioactivity research
Isolation of polonium and radium and the theory of radioactive decay.
Why it mattered
Founded radiochemistry and cancer radiotherapy.
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