Well, Martians come from Mars, and Jovians from Jupiter, but what about those pesky Venusians? Well, some say that the correct form for inhabitants of Venus is Venerean, with an adjectival form of venereal. Of course, venereal has picked up a whole 'nother meaning that has little to do with love and more to do with pathology. So, how about the other planets? Mercury, Hermetic or Mercurian, Mercurial? Earth, Earthling, Terran, Tellurian? Saturn, Saturnine or Chronan? Neptune, Neptunian or Poseidonian? Uranus, Urantian, Uranian, or Uranial? Pluto, Plutonian?