The square–cube law was first described by an astronomer born in what year?
Square–cube law:  It was first described in 1638 by Galileo Galilei in his "Two New Sciences" as the "...ratio of two volumes is greater than the ratio of their surfaces". Galileo Galilei: Galileo Galilei (] ; 15 February 1564 – 8 January 1642) was an Italian polymath: astronomer, physicist, engineer, philosopher, and mathematician.
1564