There is no Sun - Moon system
The Earth revolves around the Sun, the Moon revolves around the Earth.
There is a Sun - Earth system and a Earth - Moon system.
They revolve around the Sun - hence the term Solar System.
The Sun (helio-).
the earth
Geocentric
the earth and sunlight
geocentric
Geocentric
its photosphere
Geocentric
Around the Sun.Around the Sun.Around the Sun.Around the Sun.
Geocentricism is the belief that the Earth is the center of the Universe and all other celestial objects revolve around it. (The Geocentric Theory)
because we revolve around the sun, stupid.