Now we have great tools like spreadsheets to do the numerical computations for us. Below you can download OpenOffice (or Libre Office), Apple Numbers or Excel format files. In these spreadsheets, you ...

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.

Climate change models predict that some parts of the world will get more rain and snow than the historical average, while others will get less. Different climate models give slightly different ...

Another popular system called a diagrammatic cipher, used by many children in school, substitutes symbols for letters instead of other letters. This system is, in essence, the same as the letter ...

Museum, dining, and shopping hours vary on select days. Please check our special closures before planning your visit.

Then, in the final seconds before the moon completely covers the Sun, there is a last bright flash, combined with an emerging view of the corona—the Sun’s upper atmosphere—encircling the moon. This ...

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 ...

Artist Bob Miller's Light Walk at the Exploratorium will change the way you look at light, shadow, and images.

Note that as the distance of the planet from the sun is increased, the period, or time to make one orbit, will get longer. Kepler didn't know the reason for these laws, though he knew it had something ...

Fill in your weight below in the space indicated. You can enter your weight in any unit you wish. Click on the "Calculate" button. Notice that the weights on other worlds will automatically fill in.

Eclipses can be mystifying experiences. Traditions from around the world imagine the eclipse as everything from the Sun being eaten by monsters to an intimate meeting with the moon. Here, we explore ...

Find out how to see the eclipse at its fullest and witness the incredible ring of fire. Be ready. On October 14, 2023, an annular eclipse will be visible in the continental United States. In the ...