Black holes, galaxies and cosmology

General relativity, curved spacetime and black holes, the Milky Way and other galaxies, quasars and dark matter, then the expanding universe, the Big Bang and the search for life elsewhere.

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  • Recto accretion disk
    Verso the disk of gas and dust found orbiting newborn stars, as well as compact stellar remnants such as white dwarfs, neutron stars, and black holes when they are in binary systems and are sufficiently close to their binary companions to draw off material
  • Recto active galactic nuclei (AGN)
    Verso galaxies that are almost as luminous as quasars and share many of their properties, although to a less spectacular degree; abnormal amounts of energy are produced in their centers
  • Recto active galaxies
    Verso galaxies that house active galactic nuclei
  • Recto anthropic principle
    Verso idea that physical laws must be the way they are because otherwise we could not be here to measure them
  • Recto astrobiology
    Verso the multidisciplinary study of life in the universe: its origin, evolution, distribution, and fate; similar terms are exobiology and bioastronomy

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Creative Commons Attribution 4.0 International CC-BY-4.0
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Source : https://openstax.org/books/astronomy/pages/preface — Licence : Creative Commons Attribution 4.0 International (https://creativecommons.org/licenses/by/4.0/)
Source
OpenStax — Astronomy (first edition)
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Thème
Astronomie
Langue
English
Version
3
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