"Sagan" as a Unit of Measurement

Carl Sagan was an American cosmologist, astronomer, and absolute tireless champion of the sciences in the public sphere. He was the author, co-editor, or editor of almost two dozen science books, and the host the award-winning 1980 television series Cosmos. Sagan was well known for his excitement in talking about science, especially cosmological issues, and would strongly enunciate the M sound in millions and the B sound in billions to emphasize just how big the numbers were and properly diff...