Following his recently completed Rudolphine Tables, Kepler predicts a transit of Mercury on 7 November 1631 and a transit of Venus on 6 December 1631. He writes an "admonition" to astronomers to prepare for observations on these dates, which is published after his death by Jacob Bartsch.[1]
Francesco Stelluti's Persio tradotto in verso schiolto e dichiarato, published in Rome, is the first book to contain images of organisms viewed through the microscope.[2]
