Venus Occults Regulus, Revealing Venus Diameter and Atmosphere, July 7, 1959
Venus occults the star Regulus. This rare event is used to determine the diameter of Venus and the structure of the Venusian atmosphere. Date: July 7, 1959 Read more on Wikipedia โ ๐ Other events on July 7 ๐ Events on this day in 1959 ๐ On This Day (Today)