24 May

1883 - Brooklyn Bridge opens

On 24 May 1883, the Brooklyn Bridge opened in New York.

1844 - Morse's first telegraph message

On 24 May 1844, Samuel Morse sent his first telegraph message: What hath God wrought.

1543 - Copernicus publishes De revolutionibus

On 24 May 1543, the day he died, Copernicus's De revolutionibus appeared, founding modern heliocentrism.