Worlds from this series of books:

  • III Delta Kaising
  • IV Anbus
  • Al Dhanab
  • Arrakis
  • Bela Tegeuse
  • Buzzell
  • Caladan
  • Chapterhouse
  • Chusuk
  • Corrin
  • Ecaz
  • Gamont
  • Gansireed
  • Gangishree
  • Giedi Prime
  • Ginaz
  • Grumman
  • Hagal
  • Harmonthep
  • Ipyr
  • Ix
  • Junction
  • Kaitain
  • Kolhar
  • Lampadas
  • Lankiveil
  • Lernaeus
  • Muritan
  • Naraj
  • Palma
  • Parmentier
  • Poritrin
  • Richese
  • Romo
  • Rossak
  • Salusa Secundus
  • Sikun
  • Synchrony
  • Tleilax
  • Tupile
  • Wallach IX
  • Zanovar

 

Details here.

“In the appendix of Dune it is mentioned that there are 13,300 worlds under the control of the Landsraad at the end of the Butlerian Jihad which is ten thousand years before the events of Dune.”
While that sounds like a lot, it is only ~23x23x23 (can fit in a cube-formation of that many star-systems, if there was only 1 useful world in each of those systems).
If it is instead 10 worlds per solar system, it is only a local stellar neighborhood of 11x11x11 systems.
20,000 worlds likewise spread throughout 2,000 systems would fit in a ~12x12x12 cluster; all of these are extremely tiny portions of the Milky Way galaxy.

 

20k yrs in the future, Inisfree is in New Atlantis; it has been relocating for millennia, and is now in the middle of the Atlantic Ocean.

 

Also see: