“The Heaven of Mars may be compared to Music, for two properties. The first is its very beautiful relation [to the others]; for, enumerating the movable heavens, from whichsoever you begin, whether from the lowest or the highest, the Heaven of Mars is the fifth; it is the centre of all.⁠ ⁠… The other is, that Mars dries up and burns things, because its heat is like to that of the fire; and this is the reason why it appears fiery in color, sometimes more, and sometimes less, according to the density and rarity of the vapors which follow it, which sometimes take fire of themselves, as is declared in the first book of Meteors