- The National Guardian was a left-wing independent weekly newspaper established in 1948 in New York City. The paper was founded by James Aronson, Cedric Belfrage and John T. McManus in connection with the 1948 Presidential campaign of Henry A. Wallace under the Progressive Party banner. Although independent and often critical of all political parties, the National Guardian is thought to have been initially close to the ideological orbit of the pro-Moscow Communist Party USA, but this suspected association quickly broke down in the course of several years.
- Nicolaus Copernicus (plato.standford.edu)
Nicolaus Copernicus (1473–1543) was a mathematician and astronomer who proposed that the sun was stationary in the center of the universe and the earth revolved around it. Disturbed by the failure of Ptolemy’s geocentric model of the universe to follow Aristotle’s requirement for the uniform circular motion of all celestial bodies. Copernicus decided that he could achieve his goal only through a heliocentric model. He thereby created a concept of a universe in which the distances of the planets from the sun bore a direct relationship to the size of their orbits. At the time Copernicus’s heliocentric idea was very controversial; nevertheless, it was the start of a change in the way the world was viewed, and Copernicus came to be seen as the initiator of what is commonly known as the Scientific Revolution.