In today's image, we see what is known as the Same Color Illusion. Squares A & B are exactly the same color although it may not look like they are at first glance. When a bar of the same color is laid between these two, we can see that they are actually the same color.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image to select the photo corresponding to the date of this podcast.

I welcome comments and suggestions about these podcasts. I can be reached here: wagnerastronomy@gmail.com

This work is licensed under a Creative Commons Attribution 4.0 International License.