The revelation in August that a manuscript attributed to Galileo Galilei was a forgery has led to the discovery of a different book that the celebrated Italian astronomer actually did write, but under a pseudonym, a new investigation finds.  

Previously unpublished notes by Galileo that were checked in the aftermath of the forgery's discovery indicate that he was the true author of a treatise titled the "Considerazioni Astronomiche di Alimberto Mauri" — Italian for the "Astronomical Considerations of Alimberto Mauri" — which was published in 1604.