Magrathea is a planet that makes other planets including earth and many more. It is the place that Zaphod wants to get to and find the ultimate question. On Magrathea Arthur meets a man named Slartibatifast who tells Arthur all about earth and shows him earth 2.0. Magrathea is also the main planet in the book because that is where they always want go to. When they get there they find a couple of portals, some of them go in one and Arthur is to scared so he stays behind. That is when
Slartibatifast shows up and shows up and shows Arthur Earth 2.0. HE asks Arthur if he wanted anything on it or if he wanted to get rid of anything. He said yes, me.