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.
How do we know that the Earth revolves around the Sun? To be honest, we don't. Before Copernicus, Westerners believed that the Earth was at the center of the universe and that the Sun revolved around the Earth, as did the stars and the planets.ow we know that the earth orbits the sun and not the reverse is that relativity assures us that physical laws are similar in any moving frame -- however, objects in a circular orbit are actually in an accelerating frame.