Anyone can participate in the process of NASA science and engineering through what we call citizen science, regardless of your citizenship. You might have heard it called “participatory science” or “community science.” It all means that thousands of people around the world are helping the professionals make discoveries about our planet, our solar system, and our universe at large, through these projects. Meet three volunteers whose perspectives have changed by participating in citizen science. NASA's Curious Universe is an official NASA podcast. Discover more adventures with NASA astronauts, engineers, scientists, and other experts at nasa.gov/curiousuniverse