Noun
inner planet (plural inner planets)
(astronomy, planets) Any planet of the Solar System whose orbit is located between the asteroid belt and the sun, i.e., any of Mercury, Venus, Earth, or Mars.
If Fred couldn't build himself a peace treaty, the OPA would never win against the discipline and unity of an inner planet navy. But they would also never lose. War without end. Well, what was history if not that? And how would having the stars change anything? Daniel Abraham