interplanetary

inter- +‎ planetary

interplanetary (not comparable)

1. Existing or occurring between planets.

   Humans are just beginning to explore interplanetary travel.

   • 1956, Cyril Hume, Forbidden Planet, spoken by Cook:

     Him and me, we kind of got to toasting each others good health. Just for cordial interplanetary relations you understand.

   • 1976, “Calling Occupants of Interplanetary Craft”, in 3:47 EST, performed by Klaatu:

     Calling occupants of interplanetary craft / Calling occupants of interplanetary / Most extraordinary craft / We've been observing your Earth / And one night we'll make a contact with you

   • 1994, “Space Cowboy”, in The Return of the Space Cowboy, performed by Jamiroquai:

     This is the return of the space cowboy / Interplanetary good vibe zone

• interplanetary space