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.
The Two Forces That Keep the Planets in Motion Around the Sun By Kimberly Turtenwald; Updated April 24, 2017 Many people know that the planets in Earth's solar system move around the sun in orbits. This orbit creates the days, years and seasons on the Earth. However, not everyone is aware of why the planets orbit around the sun and how they remain in their orbits. There are two forces that keep the planets in their orbits.