Landsat - Thermatic Mapper

Landsat - Thermatic Mapper

This artifact is a full-scale model of the Thematic Mapper (TM) instrument first used on Landsat 4, which launched in 1982 and operated until 1993. As the instrument flew over the Earth it "saw" only selected wavelengths of light that, when processed, provided information on the condition of land, water, and vegetation.