To Spark A Scientific Revolution

How Physics Was Introduced Into Astronomy For The First Time

The motion of the ‘star’ Mars according to Ptolemy, from a first edition of Kepler’s Astronomia Nova (1609). Image credit: Bonhams

It may seem amazing to us now, but astronomy and physics were once completely disconnected from each other. Prior to the early 17th century astronomy was considered a branch of mathematics, and physics a branch of philosophy.