The composition of that light that falls on Earth matters to understanding Earth’s energy budget.
In December 2017, NASA is launching a new instrument called the Total Solar and Spectral Irradiance Sensor (TSIS-1) designed to study this question.
NASA’s TSIS-1 will measure the Sun’s energy in 1,000 different wavelengths, including the visible, ultraviolet, and infrared, known as solar spectral irradiance.
Find out more in this short narrated video.
This video is public domain and along with other supporting visualizations can be downloaded from the Scientific Visualization Studio at: