Difference between Cosmology and Astrophysics/Astronomy

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Astrophysics and cosmology are distinct fields within the study of the universe, with astrophysics focusing on observable phenomena like galaxies and stars, while cosmology examines the universe's overall properties and evolution. Quantum mechanics operates on a much smaller scale, explaining the behavior of particles at the atomic level. The discussion touches on the idea of "alpha science," suggesting a hierarchy in scientific disciplines, though this concept is not clearly defined. Participants recommend consulting Wikipedia for foundational knowledge on these topics. Understanding these differences is crucial for grasping the broader context of astronomical research.
Salman Ranjha
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Well my question is what is exactly the difference between Astrophysics and Cosmology and Quantum mechanics ?
 
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Did you check the wikipedia articles? They should give a good idea.
 
Quantum mechanics is a very successful theory of how things work on the tiniest scales, atomic scale and smaller.
Cosmology is the opposite, it encompasses many theories of how things work on the largest of scales, the entire universe.
Astrophysics studies the observable universe, Galaxies etc, using telescopes and other instrumentation
 
A quick distinction: cosmology studies the properties and evolution of the universe as a whole, whereas astrophysics studies the properties and processes of structures in the universe.
 
Hmm. Does that mean cosmology tends to more of an alpha science than astrophysics?
 
mfb said:
Did you check the wikipedia articles? They should give a good idea.
Well I am afraid that I have not checked any articles yet but thanks for the advice I will check em now
 

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