While he was a pioneer of infrared astronomy, he is better known for his discoveries in the solar system, which included his analysis of the atmospheres of Mars, Titan and the planetary satellites Nereid and Miranda.  
This man served as chief scientist in the Ranger program, choosing crash-landing sites on the moon and selecting landing sites for the Surveyor and Apollo programs.  While he was a pioneer of infrared astronomy, he is better known for his discoveries in the solar system, which included his analysis of the atmospheres of Mars, Titan and the planetary satellites Nereid and Miranda.  For 10 point - name this Dutch-born American astronomer whose name is attached to a disk-shaped region of minor planets outside of the orbit of Neptune.
This man served as chief scientist in the Ranger program, choosing crash-landing sites on the moon and selecting landing sites for the Surveyor and Apollo programs.  
Gerard Peter Kuiper