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
Places in The Hitchhiker's Guide to the Galaxy its "lovely crinkly edges". For a time in the distant past, fjords were fashionable and he won an award for their design. During their trek away from the site of Golgafrinchan ark crash, Ford and Arthur see Slartibartfast's likeness and signature carved into an ice wall in one of the fjords, making them realise that they are on prehistoric Earth. A planet in Earth's solar system beyond the orbit of Pluto. Rupert was named Persephone, but nicknamed Rupert after an astronomer's pet parrot. It was eventually settled by the Grebulons. In 2005, a large body fitting Rupert's description was discovered