YOU SAID:
I wanna take a trip to Mars.
INTO JAPANESE
私は火星への旅をしたい。
BACK INTO ENGLISH
I want to travel to Mars.
INTO JAPANESE
私は火星に行きたい。
BACK INTO ENGLISH
I want to go to Mars.
INTO JAPANESE
私は火星に行きたい。
BACK INTO ENGLISH
I want to go to Mars.
That didn't even make that much sense in English.