Take the local train, Circumvesuviana, from the Sorrento Central train station to the Naples Central Railway Station. Sorrento is the last and first stop on its trip around the Gulf of Naples, so you don't have to worry about getting on a train in the wrong direction. Train fare costs about $5.50.
How elements are formed. Our world is made of elements and combinations of elements called compounds. An element is a pure substance made of atoms that are all of the same type. At present, 116 elements are known, and only about 90 of these occur naturally.
The oldest elements in the universe are also the simplest and most abundant: hydrogen and helium. They were first formed after the big bang approximately 14 billion years ago. All of the other elements were created in the cores of stars, which were formed several million years after the big bang event.