Abyssal plains were not recognized as distinct physiographic features of the sea floor until the late 1940s and, until very recently, none had been studied on a systematic basis. They are poorly preserved in the sedimentary record, because they tend to be consumed by the subduction process.
The first man to discover that the earth moves around the sun was an Italian scientist named Galileo Galilei.
Galileo made observations of the movements of the planets and the Sun. By the relative movements of these celestial bodies, Galileo provided evidence that the Aristotelian model of geocentrism (the Earth is the center of the universe) was incorrect, and advocated instead heliocentrism (the Sun is...