spice spice spice exists on only one planet spice exists on only one planet spice exists on only one planet spice exists on only one planet the planet is arrakis also known as dune spice spice spice spice spice exists on only one planet spice exists on only one planet dune spice spice spice spice spice spice spice spice spice exists on only one planet in the entire universe the planet is arrakis also known as dune