Cardboard Automata are a playful way to explore simple machine elements such as cams, levers, and linkages, while creating a mechanical sculpture.

The attraction and repulsion of magnets produces entrancing, unpredictable motion.

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Make a simple rocket and a rocket launcher, and watch a demonstration of how the finished rocket will fly.

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Copper coils become electromagnetic swings.

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Make an observatory to see the amazing colors in bubbles!

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Discover the secret colors hidden in black ink. With a paper towel, a black marker, and a cup of water, create a rainbow of colors while exploring capillary action and chromatography.

Grow spikes of crystals in the sun.

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Using baking soda and vinegar, you can pop a plastic bag with the power of fizz.

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"Cold" metal and "warm" wood may be the same temperature.

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Start your own electric flea circus!

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Wind tubes are a playful and inventive way to explore the effect that moving air has on objects.

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Caged molecules do their thing.

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The dipping bird seems to go forever but it's not perpetual motion!

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Try to balance a stick on the tip of your finger. Does it matter which end is up?

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Find out one reason that buildings aren't equal in an earthquake.

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Dark-colored materials both absorb and emit energy more readily than light-colored materials.

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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.

Learn about origami, make your own paper, and find out the best way to fold a paper airplane.

Explore the places, people, tools, and ideas behind the origins of matter, the universe, and life itself.

Visit the European Organization for Nuclear Research, known as CERN, which studies what the universe is made of and how the universe works.

Learn about scale and structure with eight great activities designed for the elementary classroom from our book The Exploratorium Guide to Scale and Structure. Available in English, French and Italian!

Using a spectroscope, you may see that what appears to be a single color of light is really a combination of colors called a spectrum.

Watch an archived webcast to see complex mechanisms slide, roll, burn, pour, push, pull, bump, and grind in an amazing chain reaction.

Everything you ever wanted to know about bubbles, but were afraid to ask.

Get messy with ExploraGoo and Outrageous Ooze! Get airborne with the Fabulous Foam Flyer! Get loud with the Water Gong or Straw Oboe!

In celebration of Albert Einstein's work in 1905, science laboratories and museum around the world (including the Exploratorium) participated in a twelve-hour webcast that explored Einstein's influence on current physics research.