A Blonde Astronaut

There was a blonde, a red head, and a brunette and they were all up in space. Each girl tried thinking up ways to be better then the other two...
The red head said, "I am going to be the first woman to land on mars." The brunette said, "I can beat that, I'll be the first woman to land on saturn." The blonde said, "I'll beat both of you, I'll be the first woman to land on the sun." "How are you going to do that", the other two asked. "Simple", said the blonde. "I'll go at night!"