Will solar sails take us to the stars?

This Stuff You Should Know episode explores the fascinating world of solar sailing - spacecraft that use sunlight instead of fuel to travel through space. Josh and Chuck dive into how these ultra-thin, reflective sails can harness photons from the sun to achieve incredible speeds over time, potentially revolutionizing deep space exploration and making interstellar travel possible within decades. They discuss the science behind how light creates momentum, the materials and engineering challenges involved, and some exciting real-world missions including Japan's successful tests and NASA's upcoming Sunjammer project.