So just to be clear, these rockets are going into space, then somehow coming all the way back down and landing? It seems fantastical that such a rocket could ha

So just to be clear, these rockets are going into space, then somehow coming all the way back down and landing? It seems fantastical that such a rocket could have a controlled descent from space and then land vertically (considering how the shuttle does it for example). How will it control decent speed? Will they carry enough fuel to control the entire descent and land?