Wiktionary
extra-planetary
a. (alternative spelling of extraplanetary English)
Usage examples of "extra-planetary".
A planet like Terzia could scarcely have afforded such a bauble, were Terzia not capable of directing its entire volume of extra-planetary exchange in as narrow a focus as it desired.
We HydrOs were pre-sapients, not yet evolved to our full powers, lacking all knowledge of the extra-planetary universe.