Representing Astronomy at Williams College to the 4M Community, Jay M. Pasachoff is Field Memorial Professor and President of the International Astronomical Union's Commission on Education and Development.  At Williams, where he is  also chair of the astronomy department and director of the Hopkins Observatory, he teaches astronomy courses at all undergraduate levels and works with students on research projects.  He received the  Education Prize of the American Astronomical Society "For his  eloquent and informative writing of textbooks from junior high  through college, For his devotion to teaching generations of  students, For sharing with the world the joys of observing eclipses,  For his many popular books and articles on astronomy, For his intense advocacy on behalf of science education in various forums, For his willingness to go into educational nooks where no astronomer has gone before ."

Pasachoff is the author of the Peterson Field 
Guides: Stars and Planets, a best selling book for amateur 
astronomers and for the general public.  His astronomy textbooks for 
college students are very widely used.  He has written also popular 
books about astronomy for the public and school texts for middle school.

Pasachoff has made expeditions to over 40 solar eclipses including the 2006 total solar eclipse as observed from the Greek island of Kastellorizo, and he is the  Chair of the International Astronomical Union's Working Group on Solar Eclipses.  His research includes not only work on the Sun but  also studies of Pluto and Charon and of deuterium in interstellar space.