In order to create the game over screen I, for the most part, did the same thing I did with creating the menu screen. For the game to end I created box triggers which when the ship hits, ends the game and goes over the Game Over Screen.
Here you can see the box triggers I have set up for when the ship misses the planet or waits to long to jump.
Here are overlap nodes for the box triggers.
I also put a button over the whole screen so when tapped, it takes you to the main menu. I also put the opacity down to zero so you cannot see it.
Here is a gif of the menus in motion.