Discover the “cosmic coincidence” that makes solar eclipses possible!

Try a new tilt on eclipses.

Make a scale model of a total solar eclipse!

A ring light stands in for the Sun.

Why the world gets dark so fast outside the circle of the campfire.

Compare the brightness of two light sources with an oil spot on a white card.

Trace your shadow, then make it change.

Measure the efficiency of solar cells.

Model the patterns of sunlight and shadow on Earth.

Investigate how to change a shadow’s size, shape, and position.

Use your thumb to eclipse your friend!

Safely view our nearest star.