hat
Faz yo pwodwi paske sèl fas Venis (oswa Lalin nan) vire sou soulèy la ki klere. Faz Venis yo soutyen teyori Copernic lan selon teyori sa planèt yo k ap tounen ozalantou solèy la.
eng
Phases happen because only the side of Venus (or of the Moon) facing the Sun is lighted. The phases of Venus supported the theory of Copernicus that the planets go around the Sun.