We all know that the Moon has different phases, but it can be hard to figure out why. Try this activity to see how the Moon's phases really work.

What cause the phases of the moon? Make a model to see how the positions of the Sun, Moon, and Earth cause the crescent, gibbous, quarter, full, and new moon.

Help your second grader observe the phases of the moon, and then let the fun loose: he'll get to chart his observations with marshmallows!

Try this simple 2nd grade science experiment to teach your child about the principles of luminosity and light reflection.

Recreate the fantastic phenomena of solar eclipses with your child using just a flashlight, a quarter, and her very own face!

What's a crater, and how does it happen? Here's a kindergarten experiment with safe, nontoxic ingredients.

This interdisciplinary card game will have your third grader working on math facts as he travels through the solar system!

Kids are sure to be entranced by the magic of the ocean when they create their very own ocean in a bottle.

Enjoy those warm spring and summer nights with your child while teaching some basic astronomy at the same time.