inner planet

12 LETTERS · STARTS WITH I

inner planet is a valid 12-letter word worth 13 points in Scrabble and 18 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
I1N1N1E1R1P3L1A1N1E1T1
1 + 1 + 1 + 1 + 1 + 0 + 3 + 1 + 1 + 1 + 1 + 1 =13 PTS
DOUBLE WORD → 26TRIPLE WORD → 39
MEANING

What does inner planet mean?

1