Answer: igy

AnswerCrossword Clue
IGY

Donald Fagen hit that refers to a scientific event

IGY

1957-58 sci. project

IGY

Abbreviation in the news.

IGY
Recently ended period of scientific activity.
IGY
Global milestone of science: Abbr.
IGYPer. from July 1, 1957 to Dec. 31, 1958
IGY1982 Donald Fagen hit subtitled "What a Beautiful World"