Li, Jian. “On the Breadth of Earth’s Shadow Of Lunar Eclipse - A New Approach To Students’ Understanding Of Aristarchus’s ‘Hypothesis 5’”. Journal of Astronomy & Earth Sciences Education 9, no. 2 (November 1, 2022). Accessed October 16, 2024. https://journals.modernsciences.org/index.php/JAESE/article/view/39.