Blue Solar Array — 2 museum-grade prints in this palette. The Landsat programme began in 1972 and became the reference dataset for global change science — deforestation maps, urban sprawl animations, and drought monitoring graphics that appear in textbooks and policy briefings alike. Landsat 8's free and open data policy, formalised through the USGS distribution model, accelerated commercial downstream applications and citizen science projects worldwide. Terra transformed Earth science from periodic field campaigns into continuous global monitoring — MODIS became the workhorse instrument cited in thousands of climate papers. Its morning orbit pairs with Aqua's afternoon pass to capture diurnal cycles in clouds, precipitation, and surface temperature.