In this English contribution to the controversy on the comets, Bainbridge came to a similar conclusion as did Oratio Grassi in Italy - that comets move through the heavens beyond the Moon.  

This book contains the first telescopic observations published in England and the first recorded use of the word “telescope” in English.  

In this work, Bainbridge also rejected the astrological significance of comets.  

He later became the first Savilian Chair of Astronomy at Oxford.