Take in a solar eclipse with Dara in Texas, then get insights into the sun's formation and how it helped humans evolve. Later, meet a family that relies on solar energy and visit a French fusion reactor that's trying to copy the way the sun works.

Explore the sun's dark side when Dara visits an astronaut whose exposure led to a diagnosis of skin cancer. Meet a group of NASA radiation analysis experts, then witness the extreme power of our solar system's star at a high-powered French furnace.