Full moon illusion.

This article from Science News Explores discusses the phenomenon of the full moon illusion, where the moon appears larger when it is on the horizon compared to when it is high in the sky. The article explains that this illusion occurs because our brains perceive the horizon as being farther away than the sky overhead. The article provides an experimental procedure for readers to investigate the perceived size increase of the moon at the horizon using afterimages. The article encourages readers to visit snexplores.org/moonillusion for the full activity and calculations. [Extracted from the article]