On this day in 1833, Denison Olmsted was alerted by his neighbors to something truly amazing, a night sky filled with shooting stars.
Not just a one or two or a dozen or a hundred: 72,000 or more per hour. Though recognizing where among the constellations meteors came from was ancient knowledge, it had not been recorded by modern-era scientists, at least in this case. What Olmsted noticed was that the meteors were coming from one point in the sky, the constellation Leo. This regular meteor event is now called the Leonid meteor stream.
In the morning, Olmsted wrote a brief report on the meteor storm for the New Haven Daily Herald newspaper, which elicited correspondence from around the country, thus beginning a social storm, in a sense: crowd-sourced science.