But then there was the problem of preserving the civilization of the inner planets.
To think of them in control of the inner planets was revolting.
He spoke in halting syllables of Cos, the language of the inner planets!
Probably Antazzo was but one of many spies who had been sent to the inner planets.
"I haven't been to the inner planets for a week," Scotty apologized.
There is a super-dense class, still smaller, poorer in hydrogen, than the inner planets of the solar system.
Evidently Io possessed as strong a magnetic field as did the inner planets.
I shall spare the life of the Earth man on account of his knowledge of the inner planets; I can use him later.
Blaine doubted if the influence was measurable insofar as changes in the motions of the inner planets were concerned.
If the pampered ladies of the Inner Planets only knew where their thousand-dollar orchids sprang from!