earthless

adjective2

1. •
   Without earth or soil.

   • "It is," he says, "an earthless country, bordered by immense ice-islands, which are continually separating in the summer... — 1825
2. •
   (no longer used) Unearthly; not of the Earth.

   • ...as the superstitious terrors of the sailors pointed towards this earthless visitant... — 1834

adjective1

1. •
   Without the planet Earth.