Astronomy Picture of the Day · October 4, 2009

The Same Color Illusion

The Astronomy Picture of the Day for October 4, 2009 is “The Same Color Illusion,” an image. It is credited to Credit: Edward H. Adelson , Wikipedia. The original explanation runs about 106 words.

From the explanation

“Are square A and B the same color? They are.”

— APOD editors, October 4, 2009

Read the full explanation on science.nasa.gov

At a glance

Date: October 4, 2009
Type: Image
Credit: Credit: Edward H. Adelson , Wikipedia
Copyright: No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
Explanation length: About 106 words

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Source

Astronomy Picture of the Day, October 4, 2009 — science.nasa.gov/image-article/apod-2009-october-4-the-same-color-illusion

Copy taken Oct 28, 2026, 2:39 AM EDT. The image and explanation belong to their creators. OpenOrbit is not affiliated with or endorsed by NASA.