Humans generally don't have their heads take up half their body. Nor can they go anywhere in space without a helmet.
(We'd fall over as a result of the weight with the former, and you'd die quite horribly with the latter. Space is not nice when it comes to that sort of thing.)
You are correct, but the comments are for talking about whatever is on this page, which is not a professional, scientific abstract on the subject of space.
It's a game. The point of a game is to have fun, regardless of whether or not it makes sense.
It's great that you know a lot about space, but a dress-up game that is clearly less-than-realistic (and not supposed to be educational), is generally not the best place for it.
In the end, this game goes more for science fiction than for science fact.