YOU SAID:
I HAVE NEVER BEEN TO SPACE
INTO JAPANESE
宇宙に行ったことがない
BACK INTO ENGLISH
Never went to space
INTO JAPANESE
宇宙に行ったことはない
BACK INTO ENGLISH
Never been to space
INTO JAPANESE
宇宙に行ったことがない
BACK INTO ENGLISH
Never went to space
INTO JAPANESE
宇宙に行ったことはない
BACK INTO ENGLISH
Never been to space
it is unlikely that this phrase will ever reach equilibrium