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Lecturer

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	1	Turnout is typically around 50-200 people - a mixture of Columbia students (15%), local families (20%), and amateur astronomers (5%) and interested adults from the community (60%). At a recent event we took an informal poll of the attendees and determined that only 25% of them were affiliated with the University, meaning that 75% of our audience is from the general public as a whole (great news)! Furthermore, 25% of our audience is coming from outside of Manhattan, which surprised us all.
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1	3	For those of you putting together a public lecture, I recommend you prepare it as though you are explaining an astronomical topic to someone seated next to you on an airplane with no background in science. I tell parents of children who might attend, that they will likely get something out of the lecture, but not necessarily everything. When choosing a topic for a lecture, make sure it is something that you are personally interested in as well as something you have some basic knowledge about. Oftentimes the best topics are not related to your own research.
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