interplanetary rocket

21 LETTERS · STARTS WITH I

interplanetary rocket is a valid 21-letter word worth 31 points in Scrabble and 35 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

I1N1T1E1R1P3L1A1N1E1T1A1R1Y4R1O1C3K5E1T1

1 + 1 + 1 + 1 + 1 + 3 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 4 + 0 + 1 + 1 + 3 + 5 + 1 + 1 =31 PTS

DOUBLE WORD → 62TRIPLE WORD → 93

MEANING

What does interplanetary rocket mean?