Why wouldn't there be any girls here?
Some of the greatest astronomers were women; the first belgian ESA astronaut was a woman, etc etc...
As for piloting the shuttle: I've seen plenty of girls flying our shuttle simulator at the Euro Space Center where I work, and most of the times, they do a better job at it...
On the other hand, the real astronaut corps consists mainly of men. Don't know why, but that's just the way it is.