There's a redhead, a brunette and a blonde at the NASA space center. The redhead says to the flight technician "I want to go to the moon". The flight technician says she can go tomorrow. The brunette says "I want to go to Mars". He says she can go next week. The blonde says "I want to go to the sun". The flight technician says, "Don't you know you'll burn up?" The blonde says "Well then I'll go at night."