The advent of the printing press in the mid-15th century revolutionized the way knowledge was disseminated, and it played a crucial role in the spread of heliocentric ideas during the 16th century. The ability to produce multiple copies of texts quickly and efficiently meant that works such as Copernicus’s "De Revolutionibus Orbium Coelestium" could reach a wider audience than ever before. This facilitated a rapid spread of revolutionary astronomical ideas across Europe, challenging traditional geocentric views and sparking debates among scholars, theologians, and the lay public. The printing press essentially democratized knowledge, making it accessible to individuals outside the traditional academic and religious institutions and thereby accelerating the scientific revolution.