Astrophysics is the branch of astronomy that employs the principles of physics and chemistry to ascertain the nature of the heavenly bodies, rather than their positions or motions in space. Among the objects studied are the Sun, other stars, galaxies, extrasolar planets, the interstellar medium and the cosmic microwave background. Their emissions are examined across all parts of the electromagnetic spectrum, and the properties examined include luminosity, density, temperature, and chemical composition.
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|Size: ||12.4 MB|
|Date published: || 2016|
|ISBN: ||9781365545351 (DRM-EPUB)|
|Read Aloud: ||not allowed|