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Astrophysics

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astrophysics
n. study of the physical and chemical composition of celestial bodies

Wikipedia English The Free Encyclopedia

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Astrophysics
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 starsgalaxiesextrasolar 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 luminositydensitytemperature, and chemical composition. Because astrophysics is a very broad subject, astrophysicists typically apply many disciplines of physics, including mechanicselectromagnetismstatistical mechanicsthermodynamicsquantum mechanicsrelativitynuclear and particle physics, and atomic and molecular physics.

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WordNet 2.0 Dictionary

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astrophysics

Noun
1. the branch of astronomy concerned with the physical and chemical properties of celestial bodies
(hypernym) astronomy, uranology
(hyponym) cosmology, cosmogony, cosmogeny


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astrophysics
n. astrofyzika

ASTRONOMY UNBOUND Dictionary

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Astrophysics
The scientific discipline which seeks to explain why celestial objects, and the universe in general, behave in the way that they do. It relies on the assumption that the laws of physics are the same everywhere in the universe and throughout all time. See also astronomy.



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