Uploaded June 2019 | Updated September 2026, 2 hours ago

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If it's within a few weeks of the June Solstice (in the window of around June 10th through July 10th each year) there are five explorations you can perform to help determine the shape of the Earth. Are you game?

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Here are the five explorations (the first three are specifically for the June Solstice):
Angle of Elevation of the Sun youtube.com/watch?v=TMavtkf7kUM
Azimuth of Sunrise/Sunset youtube.com/watch?v=dJYuksMojN4
Path of the Sun youtube.com/watch?v=JCzYo4dGoPI
Size of the Sun youtube.com/watch?v=r2BwhccwGCM
Speed of the Sun youtube.com/watch?v=rRQgLt7pYRM