Leonard Nimoy enjoys a total eclipse of the Sun that temporarily halts the runaway Springfield monorail. "Solar energy, when will people learn?"

Phil defines eclipses and describes the different types of eclipses: Solar and Lunar. He explains how each type of eclipse occurs as well as what occurs in space during each eclipse. He defines the types of shadows, the Umbra and Penumbra, and how they affect the type of eclipse we experience on Earth.

Sunspot warns Sydney, Mindy, Sean, and Jet that a solar eclipse will be happening soon. He shares the news of the phenomenon by illustrating it using a flashlight, an orange, and a smaller ball. Sydney and Sean explain to Mindy solar eclipses and why you shouldn't look at them, and they share tips for safely viewing an eclipse.

This clip discusses the different phases of the moon and goes in to depth about each phase.

Pluto is one of the most mysterious and controversial celestial objects in the solar system. Find out what most mystifies scientists and stargazers about this dwarf planet.