This would place its next approach to the inner solar system in the 3400s.
Still, it seemed rash to press an attack so deep into the inner system.
The city also had an inner system of channels that helped to control the water.
She was running full out, driving hard toward the relative safety of the inner system.
None of them have ever had a chance to hit the Earth until they get thrown down into the inner system.
All the familiar worlds of the inner system lay far behind.
It was a valid one, still operating in the inner system.
I want you to return at once to the inner system.
He had a week and a half free before the Achilles left on its next run to the inner system.
He got into a mess in the inner system and could never get back.