what was his wife?
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which describes a possible origin for the oort cloud The Oort cloud is thought to have developed after the formation of planets from the primordial protoplanetary disc approximately 4.6 billion years ago. what is it composed of? The vast majority of Oort-cloud objects consist of ices such as water, methane, ethane, carbon monoxide and hydrogen cyanide. who discovered it? Jan Oort who was he? He was a Dutch astronomer who made significant contributions to the understanding of the Milky Way and who was a pioneer in the field of radio astronomy. where did he study? Groningen University what else has he discovered? He showed that stars lying in the outer regions of the galactic disk rotated more slowly than those nearer the center. The Galaxy does not therefore rotate as a uniform whole but exhibits what is known as 'differential rotation'." was he interested in carrying out studies on comets? Yes, He hypothesized that the Solar System is surrounded by a massive cloud consisting of billions of comets, many of them “long-period” comets that originate in a cloud far beyond the orbits of Neptune and Pluto. whom was he married to? Oort married Johanna Maria Graadt van Roggen how was he honoured? UNANSWERABLE
wiki:19057146
Jan Oort [SEP] Personal life
In 1927, Oort married Johanna Maria (Mieke) Graadt van Roggen (1906–1993). They had met at a university celebration at Utrecht, where Oort's brother was studying biology at the time. Oort and his wife had two sons, Coenraad (Coen) and Abraham, and a daughter, Marijke. Abraham became a professor of climatology at Princeton University. According to the website of Leiden University, Oort was very interested in and knowledgeable about art. "[W]hen visiting another country he would always try to take some time off to visit the local museums and exhibitions…and in the fifties served for some years as chairman of the pictorial arts committee of the Leiden Academical Arts Centre, which had among other things the task of organizing expositions".