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  2. Astrophysics - Wikipedia

    en.wikipedia.org/wiki/Astrophysics

    Astrophysics is a science that employs the methods and principles of physics and chemistry in the study of astronomical objects and phenomena. [1] [2] As one of the founders of the discipline, James Keeler, said, astrophysics "seeks to ascertain the nature of the heavenly bodies, rather than their positions or motions in space—what they are, rather than where they are", [3] which is studied ...

  3. Astrophysics for People in a Hurry - Wikipedia

    en.wikipedia.org/wiki/Astrophysics_for_People_in...

    Astrophysics for People in a Hurry is a 2017 popular science book by Neil deGrasse Tyson, centering around a number of basic questions about the universe. Published on May 2, 2017, by W. W. Norton & Company , the book is a collection of Tyson's essays that appeared in Natural History magazine at various times from 1997 to 2007.

  4. Fundamental Astronomy - Wikipedia

    en.wikipedia.org/wiki/Fundamental_Astronomy

    Hannu Karttunen, lead author of Fundamental Astronomy. Fundamental Astronomy (1984–2017) is an astronomy textbook by Finnish author Hannu Karttunen [1] of University of Turku; Pekka Kröger and Heikki Oja [2] of University of Helsinki; Markku Poutanen [3] of Finnish Geodetic Institute; and Karl Johan Donner [4] of University of Helsinki.

  5. Timeline of cosmological theories - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_cosmological...

    c. 16th century BCE – Mesopotamian cosmology has a flat, circular Earth enclosed in a cosmic ocean. [1]c. 15th–11th century BCE – The Rigveda of Hinduism has some cosmological hymns, particularly in the late book 10, notably the Nasadiya Sukta which describes the origin of the universe, originating from the monistic Hiranyagarbha or "Golden Egg".

  6. Cecilia Payne-Gaposchkin - Wikipedia

    en.wikipedia.org/wiki/Cecilia_Payne-Gaposchkin

    Cecilia Payne-Gaposchkin (born Cecilia Helena Payne; () May 10, 1900 – () December 7, 1979) was a British-American astronomer and astrophysicist.In her 1925 doctoral thesis she proposed that stars were composed primarily of hydrogen and helium.

  7. Astrophysical fluid dynamics - Wikipedia

    en.wikipedia.org/wiki/Astrophysical_fluid_dynamics

    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 ...

  8. Cosmology - Wikipedia

    en.wikipedia.org/wiki/Cosmology

    The Hubble eXtreme Deep Field (XDF) was completed in September 2012 and shows the farthest galaxies ever photographed at that time. Except for the few stars in the foreground (which are bright and easily recognizable because only they have diffraction spikes), every speck of light in the photo is an individual galaxy, some of them as old as 13.2 billion years; the observable universe is ...

  9. Space physics - Wikipedia

    en.wikipedia.org/wiki/Space_physics

    Space physics, also known as space plasma physics, is the study of naturally occurring plasmas within Earth's upper atmosphere and the rest of the Solar System.It includes the topics of aeronomy, aurorae, planetary ionospheres and magnetospheres, radiation belts, and space weather (collectively known as solar-terrestrial physics [1]).

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