5 citations
3 papers
physics.hist-ph2019
Not the Earth, but its orbit: Andre Tacquet and the question of star sizes in a heliocentric universe
Christopher M. Graney
This paper consists of a translation of Andre Tacquet's discussion of the question of sizes of stars in a heliocentric universe, as published in his posthumous Opera Mathematica of…
physics.hist-ph2008★ 5 cited
On the Accuracy of Galileo's Observations
Christopher M. Graney
Galileo Galilei had sufficient skill as an observer and instrument builder to be able to measure the positions and apparent sizes of objects seen through his telescopes to an accur…
physics.hist-ph2007
Letter to the Editor of Sky and Telescope Concerning Galileo's Observations of Mizar
Christopher M. Graney
Work published in Sky and Telescope in 2004 discusses Galileo's observations of the star Mizar. These observations raise questions regarding Galileo's assumptions about the univers…