How do the atmospheres of the Moon and Mercury compare?
A) Mercury's is much denser, like Venus, with much carbon dioxide.
B) They are about equal, each only 1 as dense as ours.
C) The cooler Moon retains a thicker nitrogen atmosphere.
D) As no spacecraft has yet landed there, no information exists about Mercury's.
E) Neither body has a permanent true atmosphere.
Question 2
A fatal flaw with Ptolemy's model is its inability to predict the observed phases of:
A) the Sun during an eclipse.
B) the Moon in its monthly cycle.
C) Mercury and Venus.
D) Mars and Jupiter.
E) Jupiter and Saturn.
Structure of the Moon
Luna, the Moon, from a 1550 edition of Guido Bonatti's Liber astronomiae.
Utagawa Hiroshige (Ando), Moon Pine, Ueno, No. 89 from One Hundred Famous Views of Edo
Henri Matisse, Venus.
The Pyramid of the Moon, looking north up the Avenue of the Dead.
Moon