Fly to the Sun

There are three men talking about space travel.One man said,"I'm so smart that I can fly to Mars in one week."The second man said,"I'm smarter,I can fly to Mars in one day."The third man said,"I'm smarter than both of you.I can fly to the sun."The other men were surprised.They said,"You can't fly to the sun.It's too hot."The third man responded,"I'm not so dumb.I'll go at night."

The sun will think he is a thief!