Definition of "interplanetary"

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

1956, Cyril Hume, Forbidden Planet, spoken by Cook

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

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

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

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