The smaller the planets are, they are, other things being equal, of so much the greater density; for so the powers of gravity on their several surfaces come nearer to equality. They are likewise, other things being equal, of the greater density, as they are nearer to the sun. — Isaac Newton

Tags: #Sun, #Equal, #Gravity, #IsaacNewton, #English, #Mathematician

Mini who’s who:

Isaac Newton : English Mathematician
Born: December 25, 1642
Died: March 20, 1727