title: Amateur scientists, the international geophysical year, and the ambitions of Fred Whipple.
authors.forename: Hans J
authors.initials: HJ
authors.lastname: Haubold
mesh_terms: D005118:Extraterrestrial Environment; D049673:History, 20th Century; D049674:History, 21st Century; D006801:Humans; D012586:Science / Q000266:history* / Q000639:trends; D018531:Spacecraft / Q000266:history