Scientists learn about the sun by watching it in different wavelengths of light.
Many of the sun's features are invisible to the naked eye. To paint a full picture of our constantly changing star, scientists use telescopes launched into space. Each telescope is outfitted with special filters that can see the sun in different wavelengths of light. To track how material and heat of different temperature moves through the sun's atmosphere, scientists only need to select the specific wavelength with which a feature can best be seen. Watch the video for a tour of the wide range of wavelengths that NASA's Solar Dynamics Observatory spacecraft uses to observe the sun.