The Exploratorium is a 501 (c) (3) nonprofit organization. Our tax ID #: 94-1696494 © 2025 Exploratorium Terms of Service Privacy Policy Your California Privacy ...

Try a new tilt on eclipses. Why doesn’t a solar or lunar eclipse happen every month? It’s because the moon’s orbit around the earth is tilted in relation to the earth’s orbit around the Sun. In this ...

Completely fill two bottles with hot water. Keep filling until a meniscus (an upward bulge) forms on the surface of the water. Completely fill two bottles with cold water. Keep filling until a ...

The Exploratorium has been sparking curiosity for more than 50 years, inspiring learners of all ages through hands-on science ...

Bilingual, family-friendly event on Saturday, September 27, showcases hands-on activities, inspiring talks, live music, and ...

You need to enable JavaScript to run the "Ron H: Weight on Other Worlds" app.

A bicycle wheel acts like a giant gyroscope. A spinning bicycle wheel resists efforts to tilt it and point the axle in a new direction. Any rapidly spinning wheel exhibits this gyroscopic property—and ...

Photosynthetic organisms capture energy from the sun and matter from the air to make the food we eat, while also producing the oxygen we breathe. In this Snack, oxygen produced during photosynthesis ...

At Pier 15, the museum is divided into galleries filled with exhibits ranging from mechanical contraptions to artworks highlighting the beauty of the physical phenomena that surround us. Galleries are ...

Experience the Exploratorium. Let your curiosity roam free through hundreds of exhibits in our six spacious indoor and outdoor galleries at Pier 15, San Francisco.

Pi Day and pie go hand in hand; Shaw’s very first Pi Day celebration in 1988 included a pie feast for Exploratorium staff, with fruit pies and a tea urn. So show off your crafty skills on March 14, ...

Make a simple mini-motor. A coil of wire becomes an electromagnet when current passes through it. The electromagnet interacts with a permanent magnet, causing the coil to spin. Voilà! You’ve created ...