The Venus Spokes Illusion

This will have been pretty galling:

The spokes Lowell saw were actually the shadow of his own blood vessels cast onto his retina. So, instead of mapping other planets, Lowell actually spent part of his career mapping the structure of his own eye.

Author: Matthew Culnane

Sometime social and UX person working in education. Interested in food, books, music, others. Working out how it all works.