The Lost Worlds of Planet Earth Ortelius hypothesized the idea that land masses may have been connected in the past, Alfred Wegener who hypothesized the idea of a super-continent Pangaea and continental drift despite the prevailing idea of flooded land-bridges at the time, and Bruce C. Heezen and Marie Tharp who discovered the Mid-Atlantic Ridge that supported the theory of plate tectonics. Tyson describes how the landmasses of the earth lay atop the mantle, which moves due to the motion and heat of the earth's outer and inner core. Tyson moves on to explain the asteroid impact that initiated the Cretaceous–Paleogene extinction event, leaving small mammals
The Songs of Distant Earth (album) album: This was not the first time that Oldfield's music had been connected with the books of Arthur C. Clarke. Prior to "The Songs of Distant Earth", Oldfield released "Tubular Bells II", which contained a track called "Sentinel" — the title of a short story written by Arthur C. Clarke that later evolved into "" (1968). Another track from "Tubular Bells II" is called "Sunjammer". The Arthur C. Clarke short story, "The Wind from the Sun", had the working title of "Sunjammer". The Songs of Distant Earth (album) The Songs of Distant Earth is the 16th album by Mike Oldfield,