Retrograde motion–the observation that Mars, Jupiter, and Saturn occasionally backtrack in their movement against the background stars–was an early problem for the theory (simply illustrated above where the Earth is the red dot in the middle) that the Earth was … Continue reading →
Catholic Sensibility 
What Copernicus and Kepler Can Teach Us About Clergy Abuse
Retrograde motion–the observation that Mars, Jupiter, and Saturn occasionally backtrack in their movement against the background stars–was an early problem for the theory (simply illustrated above where the Earth is the red dot in the middle) that the Earth was … Continue reading →