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Andrew R. Liddle FRSE (born 9 June 1965) is a professor of astrophysics at the University of Lisbon. [1] From 2018 to 2020 he was a Visiting Fellow at the University of Waterloo. [2] From 2013 to 2017 he was Professor of astrophysics at the Royal Observatory Edinburgh. [2] Publications include books and over 260 papers.
The Kelvin–Helmholtz mechanism is an astronomical process that occurs when the surface of a star or a planet cools. The cooling causes the internal pressure to drop, and the star or planet shrinks as a result.
Neil deGrasse Tyson's Astrophysics for People in a Hurry is a popular introduction to the main concepts and issues of modern astrophysics.The author explains the origin and structure of the Universe, the force of gravity, light, dark matter and dark energy, about our place in the Cosmos and how we try to understand its laws.
With these widely spaced interests, he followed his teacher Pascual Jordan, and decades-long friend Thomas Gold - both known for their often "alternative" interpretations – they influenced his more than 300 publications, among them an article entitled "The Gold Effect: Odyssey of Scientific Research" (1998) [5] and the two books "Astrophysics ...
Modern cosmological ideas follow the development of the scientific discipline of physical cosmology. For millennia, what today is known to be the Solar System was regarded as the contents of the "whole universe", so advances in the knowledge of both mostly paralleled. Clear distinction was not made until circa mid-17th century.
Astrophysical fluid dynamics is a branch of modern astronomy which deals with the motion of fluids in outer space using fluid mechanics, such as those that make up the Sun and other stars. [1] The subject covers the fundamentals of fluid mechanics using various equations , such as continuity equations , the Navier–Stokes equations , and Euler ...
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The first edition was published in Finnish by Ursa, Helsinki, 1984, and later published in English by Springer. The 6th edition was published in 2017 (ISBN 978-3-662-53044-3; previous editions were published in 2007, 2003, 1996, 1994 and 1987). It contains 548 pages and is illustrated with more than 419 images, including 34 color plates.