Hikaru was kinda emo fag.....but not too bad because Roy Focker always Fock him up if he gets too depressed. 
Watch Sky Girls and Jinki Extend.

But one thing for sure, animes f***ed up space scene. I remembered Sunrise released an very good but underrated anime, Planetes which based on a manga with the same name. Nothing can compare to it. Astronauts wear diapers like in real life. There is NO sound in space. You are basically in danger of radiation all teh time and can go nuts at anytime and anywhere. Person born on the moon will grow larger as less gravity = less restriction to the body, but the bones are very brittle and teh organs cannot sustain such a large body. Not to mention the person will die the moment he arrive at earth as he is not used to the gravity. And lack of oxigen can cause serious brain damage. GO.WATCH.IT