Correct

外太空

/ wài tàikōng / 
Strokes

Definition

outer space

Example

As a Noun

outer space

1
Wài
外
tàikōng
太空
wǔqì
武器
bùshǔ
部署

deployment of weapons in the outer space

2
Wài
外
tàikōng
太空
jūnshìhuà
军事化

militarization of the outer space

3
Wài
外
tàikōng
太空
jūnbèi
军备
jìngsài
竞赛

space arms race; weapons /arms race in outer space