This course will explore the astronomical phenomenon of planetary transits of Venus. Students will learn about the history of Venus transits, the physical and mathematical principles behind them, and the implications for modern astronomy. We will also discuss the various methods used to observe and measure planetary transits of Venus,
From Wikipedia
In astronomy, planetary transits and occultations occur when a planet passes in front of another object, as seen by an observer. The occulted object may be a distant star, but in rare cases it may be another planet, in which case the event is called a mutual planetary occultation or mutual planetary transit, depending on the relative apparent diameters of the objects.