Reference Entry

astrophysics

Edited by Stephen O'Meara and E. Julius Dasch

in A Dictionary of Space Exploration

Third edition


Published online July 2018 | e-ISBN: 9780191842764

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The study of the physical nature of stars, galaxies, and the universe. It began with the development of spectroscopy in the nineteenth century, which allowed astronomers to analyse the composition of stars from their light. Astrophysicists view the universe as a vast natural laboratory in which they can study matter under conditions of temperature, pressure, and density that are unattainable on Earth....

Reference Entry.  63 words. 

Subjects: Astronomy and Astrophysics

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