How many colors can we see? -Andrew P., 12
rcwebber-
Dear Andrew,
The human eye can see millions and millions of colors. But believe it or not, some colors exist in our world that the human eye can’t see.
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Ask Dr. Universe
color
Why is the sky blue? -Lanie, 10, St. Louis, MO
rcwebberDear Lanie,
Just the other day I looked up and wondered the very same thing. The sky is certainly blue, I thought. But on second thought, it isn’t always blue. Sunsets burst in pink and orange. The night sky is black.
Read More ...Dear Dr. Universe, How does a chameleon change colors? -Jasmine B. 12, Nepean, Canada & Marie F., 11, Ghana
rcwebberDear Jasmine and Marie,
There’s something about a chameleon’s darting eyes, long tongue, curled tail, and ability to climb that makes it a fascinating animal to watch. Especially when it’s changing colors.
And the latest research on your question suggests that how a chameleon changes has more to do with light than scientists once thought.
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