Conquer gravity? You mean like antigravity technology? I havent found anything to suggest that he was. There's a lot of rumors and stories that came from the time period. I really wouldnt believe everything you hear.
I don't think that's true. I know he was obsessesd with twins and thought blond hair blue-eyed people were a superior race and he experimented with dying people's eyes blue
does not matter. hitler was a deranged lunatic. he was depressed and bipolar. he was evil and he probably demanded many strange experiments from his scientists.
hitler was evil and cruel.maybe but he didnt do very well