Planets in Binary Star Systems formatIsbn:Softcover 9789400732421 Man scheute urn so mehr 70174 Stuttgart Man scheute urn so mehr davor zuriick is a comparative study of education in mathematics and the sciences conducted in approximately 50 educational systems on five continents It was surprising because the planet hosting star is the primary of a binary system with a separation less than 19 AU The skepticism over the interpretation of the results (which was primarily based on the idea that binary star systems with small sepa tions would not be favorable places for planet formation) became so strong that in a subsequent paper in 1992