Learn with us online while the Exploratorium is temporarily closed. You can help us reopen—donate today.
Trace your shadow, then make it change.
This is a glass of water sitting on scale doing nothing. Or is it nothing?
Who needs a microscope to see what lives in a drop of water? Instead, shine a laser pointer through a water drop and be dazzled by a display of tiny organisms.
Open your eyes to the amazing world of the ultra-tiny when you convert your cell phone into a portable, picture-taking Miniscope using a simple plastic lens from a laser pointer.
Find out what it takes to monitor climate change.
Use straight lines to learn about circles.
String and scissors are all you need to find pi all around you.
Use your cell phone to explore the mini-scopic world.
These leaf bits float like bubbles, thanks to photosynthesis.
See how air molecules behave, using self-rolling pet toys.
The Observatory Library is the Bay Observatory’s research center, providing context and historical insight to the local landscape just beyond the windows.
Select archived time-lapse sequences that reveal human and natural processes at work.
Pier 15 (Embarcadero at Green Street)San Francisco, CA 94111(415) 528-4444
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