The Exploratorium is temporarily closed. Explore our online resources for learning at home.
A 360 degree view of totality from the Exploratorium's Live Webcast production site in Casper, Wyoming on August 21, 2017. Embedded within the video, under the sun, is the view from our telescopes.
A mirror and a lens mounted on top project a live image of the outside view into a darkened room.
A flash of light leaves a lingering image.
Learn how to fly with this neat mirror trick.
Take off and fly in a mirror that makes half your body look whole.
A reflector stretches light from colored tiles into long bright ribbons.
Stare at one color—but see another.
When your eyes adapt to color, you can see things that aren’t really there.
Discover why the sky is blue and the sunset is red.
Experience Light Walk with artist and natural philosopher Bob Miller.
Polarized light reveals stress patterns in clear plastic.
Can you tell the difference between black and white?
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