Related Research Articles
The Oort cloud, sometimes called the Öpik–Oort cloud, first described in 1950 by the Dutch astronomer Jan Oort, is a theoretical concept of a cloud of predominantly icy planetesimals proposed to surround the Sun at distances ranging from 2,000 to 200,000 AU. It is divided into two regions: a disc-shaped inner Oort cloud and a spherical outer Oort cloud. Both regions lie beyond the heliosphere and are in interstellar space. The Kuiper belt and the scattered disc, the other two reservoirs of trans-Neptunian objects, are less than one thousandth as far from the Sun as the Oort cloud.
Abraham Pais was a Dutch-American physicist and science historian. Pais earned his Ph.D. from University of Utrecht just prior to a Nazi ban on Jewish participation in Dutch universities during World War II. When the Nazis began the forced relocation of Dutch Jews, he went into hiding, but was later arrested and saved only by the end of the war. He then served as an assistant to Niels Bohr in Denmark and was later a colleague of Albert Einstein at the Institute for Advanced Study in Princeton, New Jersey. Pais wrote books documenting the lives of these two great physicists and the contributions they and others made to modern physics. He was a physics professor at Rockefeller University until his retirement.
Jan Hendrik Oort 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. His New York Times obituary called him "one of the century's foremost explorers of the universe"; the European Space Agency website describes him as "one of the greatest astronomers of the 20th century" and states that he "revolutionised astronomy through his ground-breaking discoveries." In 1955, Oort's name appeared in Life magazine's list of the 100 most famous living people. He has been described as "putting the Netherlands in the forefront of postwar astronomy."
Hendrik Christoffel "Henk" van de Hulst was a Dutch astronomer and mathematician.
Robertus Henricus "Robbert" Dijkgraaf FRSE is a Dutch theoretical physicist, mathematician and string theorist, and the current Minister of Education, Culture and Science in the Netherlands. From July 2012 until his inauguration as minister in January 2022, he had been the director and Leon Levy professor at the Institute for Advanced Study in Princeton, New Jersey, and a tenured professor at the University of Amsterdam.
Maarten Schmidt was a Dutch-born American astronomer who first measured the distances of quasars. He was the first astronomer to identify a quasar, and so was pictured on the March cover of Time magazine in 1966.
Leiden Observatory is an astronomical institute of Leiden University, in the Netherlands. Established in 1633 to house the quadrant of Rudolph Snellius, it is the oldest operating university observatory in the world, with the only older still existing observatory being the Vatican Observatory.
Samuel Abraham Goudsmit was a Dutch-American physicist famous for jointly proposing the concept of electron spin with George Eugene Uhlenbeck in 1925.
Paulo César Silva Peixoto is a Portuguese former professional footballer who played mainly as a left midfielder but occasionally as a left-back, currently a manager.
Bart van Oort is a Dutch classical pianist.
José Luís Marques Peixoto is a Portuguese author, poet and playwright. A professional writer since 2001, his works have been translated into more than 30 languages.
Syun-Ichi Akasofu is the founding director of the International Arctic Research Center of the University of Alaska Fairbanks (UAF), serving in that position from the center's establishment in 1998 until January 2007. Previously he had been director of the university's Geophysical Institute from 1986.
Jan van Oort was a Dutch children's book writer and comic strip cartoonist, working under the pseudonym of Jean Dulieu. He is known for his creation of Paulus the woodgnome.
In astronomy, the Hills cloud is a vast theoretical circumstellar disc, interior to the Oort cloud, whose outer border would be located at around 20,000 to 30,000 astronomical units (AU) from the Sun, and whose inner border, less well defined, is hypothetically located at 250–1500 AU, well beyond planetary and Kuiper Belt object orbits—but distances might be much greater. If it exists, the Hills cloud contains roughly 5 times as many comets as the Oort cloud.
Cornelis "Kees" de Jager was a Dutch astronomer who specialized in predicting solar variation to assess the Sun's impact on future climate. He was the General Secretary of the IAU from 1967 to 1973 and former director of the observatory at Utrecht. He was a fellow with the Committee for Skeptical Inquiry and played an important role in the European skeptical movement as the first chairman of both Stichting Skepsis and the European Council of Skeptical Organisations.
Oort is a Dutch toponymic surname most commonly referring to the astronomer Jan Oort. Oort was one spelling of a Middle Dutch word for "edge" or "end", as in "the edge of town". Variant forms are Oord, Oordt and Ort, as well as Van Oort, Van den Oord etc.. People with these surnames include:
José Pinto Peixoto was a Portuguese meteorologist. As a part of Victor Starr's research group, including Abraham H. Oort and Ed Lorenz, and then later as director of the Geophysical Institute de Luis at the University of Lisbon, he contributed to theories of the global atmospheric circulation.
Tiago de Paula Peixoto is a Brazilian physicist who works in the areas of Network Science, Statistical Physics, and Complex Systems. He is currently an Associate Professor of Network and Data Science at the Central European University.
References
- ↑ Peixoto, José P.; Oort, Abraham H. (1992). The Physics of Climate (3rd ed.). Springer-Verlag. ISBN 978-0-88318-712-8.
