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.
Retired US Navy officer, astronomy buff, history nut. The earth moves at about 67,000 miles per hour around the sun and rotates over 1000 miles per hour. ____________. The Earth's orbit isn't quite circular; it's a little bit elliptical, so the speed of the Earth in its orbit around the Sun is not constant.