toph was shown easily bending a meteorite that sokka gave her, meaning that toph can bend any dirt regardless if its from earth or not, meaning toph couldve definitely bent the moon and the only reason she didnt do it was out of respect for sokka and his ex gf
Toph doesn't know where the fuck the moon is
Sokka: my first girlfriend turned into the moon
Toph: WAit…. The moon is real? I always thought it was something that my parents made up to taunt me. A giant hunk of earth in the sky out of reach!