The negative result of the Michelson-Morley experiment which caused the aether theory to be abandoned. It is the basis of Albert Einstein's theory of relativity,
... 27.2% under the age of 18, 8.7% from 18 to 24, 29.5% from 25 to 44, 21.0% from 45 to 64, and 13.5% who are 65 years of age or older. The median age is 35 years. Fo ...