Phases of Venus
Variations of lighting of the planet's surface
Phases of Venus
The phases of Venus are the variations of lighting seen on the planet's surface, similar to lunar phases. The first recorded observations of them are thought to have been telescopic observations by Galileo Galilei in 1610. Although the extreme crescent phase of Venus has since been observed with the naked eye, there are no indisputable historical pre-telescopic records of it being described or known.
Read on Wikipedia · Image Statis Kalyvas - VT-2004 programme, Attribution
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