Watch water boil at room temperature.

Turn an old CD into a spectroscope to analyze light.

¡Descubre la “coincidencia cósmica” que hace posible los eclipses solares!

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

Create a scale model of the earth-moon system using different-sized spheres.

Try a new tilt on eclipses.

Make a scale model of a total solar eclipse!

Un anillo de luz representa al Sol.

A ring light stands in for the Sun.

Prove to yourself that Galileo was right.

Just spew it—build your own cyclic hot water fountain.

Measure the height of an object indirectly using your hand and a ratio.