Couldn't get to the Panama Pacific International Exposition in 1915? Go now in 3-D!
An introduction to spectra and to the space-based telescopes. The site includes a number of hands-on activities.
Ordinary materials used in extraordinary ways.
Get messy with ExploraGoo and Outrageous Ooze! Get airborne with the Fabulous Foam Flyer! Get loud with the Water Gong or Straw Oboe!
Play. Invent. Explore. PIE is a group of educators who share a playful and inventive approach to teaching with technology.
Geometry Playground will change the way you think about geometry. This exhibition engages your hands, brain, and body in playful investigations of this most visible branch of math.
Make table-top Exploratorium exhibits
Explore our 2000 guide to the solar max, the period in the solar cycle during which the number of sunspots is greatest.
Use live data to check the weather in space, and learn how it can affect us here on earth.
Explore Saturn, its rings and moons, and see the latest images.
Learn about the transit of Venus - what it is, what you'll see, and why it's important. View the rarest eclipse of them all - the Transit of Venus.
See the tiny disk of Mercury slowly travel across the face of the sun in this rare event.
Pier 15(Embarcadero at Green Street)San Francisco, CA 94111(415) 528-4444
© 2015 Exploratorium
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