Book details

Books by Erin Sullivan

Retrograde Planets

Erin Sullivan

 "Geocentricity might well be egocentricity." The phenomenon of retrograde motion is based on our Earth-centered view of the solar system, but the movement and cycles of retrogradeMore Info

Retrograde Planets

Erin Sullivan

 "Geocentricity might well be egocentricity." The phenomenon of retrograde motion is based on our Earth-centered view of the solar system, but the movement and cycles of retrogradeMore Info