Landsat satellites circle the globe every 99 minutes, collecting data about the land surfaces passing underneath.
After 16 days, the Landsat satellite has passed over every spot on the globe, and recorded data in 11 different wavelength regions. The individual wavelength bands can be combined into color images, with different combinations of the 11 bands revealing different information about the condition of the land cover.
NASA’s Goddard Space Flight Center has created a multimedia product that easily displays the ‘layers’, or individual bands, of Landsat Level-1 Products:
Sources/Usage: Public Domain.
Additional file formats of the animation can be downloaded from NASA.