In this episode, Phil breaks down what happens during a solar and lunar eclipse and provides tips for safely viewing a solar eclipse. Learn how the Ancient Greeks calculated a close estimation of the earth and moon's actual size two...

University of Nottingham scientists discuss the characteristics of the Sun, which, in spite of it being crucial to life on Earth, is very ordinary. Learn why. [5:42]

Learn why photons, electric fields, silicon, and electrons are important when it comes to generating electricity from sunlight in solar panels. [1:15]

This crash course tackles the topic of eclipses. Learn about both the solar and lunar types. [10:32]