NASA Chief Scientist 不是一个人， 是一些人。每个人都代表NASA看重的一个学科。所以在黄锷的职位上才有CHIEF SCIENTIST FOR OCEANOGRAPHY。注意，这里用的是FOR，不要是OF。

NASA Chief Scientist
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The Chief Scientist was the most senior science position at the National Aeronautics and Space Administration (NASA). The Chief Scientist served as the principal advisor to the NASA Administrator in science issues and as interface to the national and international science community, ensuring that NASA research programs are widely regarded as scientifically and technologically well founded and are appropriate for their intended applications.[1]
[edit] History

The Chief Scientist position was created to advise the NASA Administrator on budget, strategic objectives, and current content of NASA's science programs. The Chief Scientist works closely with appropriate representatives of the NASA Strategic Enterprises and the Field Centers, as well as advisory committees and the external community. The Chief Scientist represents the Agency's scientific objectives and accomplishments to other federal agencies, industry, academia, other government organizations, the international community, and the general public.[2]

The Chief Scientist chairs the NASA Science Council, a forum for discussion of the Agency policies, practices, and issues from the viewpoint of the science disciplines.[3]

The NASA chief scientist position was discontinued in Sept 2005 and many of the functions moved to be within the Science Mission Directorate (SMD).