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.
You are moving because the Earth and everything in our solar system is constantly moving. Our solar system includes the Sun, nine planets and their Moons, comets and asteroids. These objects are sometimes called celestial bodies, and they are constantly moving, too. At the center of it all is the Sun. It takes the Sun 25 days to spin, or rotate, completely around. The Earth, which is the third planet from the Sun, takes 24 hours to rotate. This is what causes day and night. As the Earth rotates, it also moves, or revolves, around the Sun. The Earths path around the Sun is called its orbit. It takes the Earth one year, or 365 1/4 days, to completely orbit the Sun.