My favorite thing in the night sky appears on Aug. 28 — and it proves Earth is a sphere

A significant event will occur on August 28th, offering an opportunity to observe a large, curving shadow moving across the Moon during a deep partial lunar eclipse. This phenomenon provides a visually striking demonstration of Earth’s shape. Scientists describe this as one of the most impressive and informative celestial events. During the eclipse, observers will witness the shadow cast by our planet upon the lunar surface. The movement of this curved shadow is direct evidence supporting the spherical nature of Earth.