Navy Vertical Title — 3 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. Mariner 10's Venus gravity assist on 5 February 1974 was the first use of a planetary flyby to reshape trajectory — a technique that later enabled Voyager's Grand Tour, Cassini's Saturn arrival, and countless delta-v savings across the solar system. The three Mercury flybys mapped nearly half the planet's surface, revealing cratered highlands and confirming a weak magnetic field unlike the Moon. Alan Shepard's Freedom 7 flight on 5 May 1961 answered Soviet Vostok 1 with an American suborbital hop — enough to restore confidence and accelerate congressional commitment to Apollo. Shepard became the first American in space and, a decade later, walked on the Moon at Fra Mauro during Apollo 14 — the longest span between first flight and lunar surface of any astronaut until surpassed by later careers.

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