Wilbert Smith Archives Files Box 1136 03 1136-03-p015

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NIGHTTIME ASTRONOMICAL SKY SURVEYS AND UNIDENTIFIED FLYING OBJECTS Carl Sagan Harvard College Observatory and Smithsonian Astrophysical Observatory Cambridge, Massachusetts There are several instances of extended observations of large fields of view of the night sky by trained astronomical observers. These observations are usually performed in the context of meteor studies. One such is the Harvard Meteor Project, in which visual and photographic observations were performed (the latter with...