Stephen Hawking — what did Stephen Hawking do at each age?

スティーヴン・ホーキング | Scientist / Inventor | Born 1942

Timeline

• Age 21 (1963): Diagnosed with ALS
• Age 32 (1974): Published black hole radiation theory
• Age 46 (1988): Published A Brief History of Time
• Age 65 (2007): Experienced zero gravity flight

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