It would be very difficult to watch heavenly bodies orbit while you scuba dive, but 1943 is the year that joins these two activities together. People used "orbit" as a noun long before that, though, with the meaning "the curved path that something, such as a moon or satellite, follows as it goes around something else, such as a planet." Our earliest evidence of the noun is from 1696! "Orbit" comes from the Latin word "orbita," meaning "path, rut, track."