Given the question: What type of details about j. allen hynek can be gathered from the following bio? Bio: dr. josef allen hynek -lrb- may 1 , 1910 -- april 27 , 1986 -rrb- was a american astronomer , professor , and ufologist . he is perhaps best remembered for his ufo research . hynek acted as scientific adviser to ufo studies undertaken by the u.s. air force under three consecutive projects : project sign -lrb- 1947 -- 1949 -rrb- , project grudge -lrb- 1949 -- 1952 -rrb- , and project blue book -lrb- 1952 -- 1969 -rrb- . in later years he conducted his own independent ufo research , developing the '' close encounter '' classification system . he is widely considered the father of the concept of scientific analysis both of reports and -lrb- especially -rrb- of trace evidence purportedly left by ufos .
The answer is:
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