Editing Outline of physical science (section)

== Branches<span class="anchor" id="Branches of physical science"></span> ==
* [[Outline of physics|Physics]] – natural and physical science could involve the study of [[matter]]<!--
   --><ref name="feynmanleightonsands1963-atomic">At the start of ''[[The Feynman Lectures on Physics]]'', [[Richard Feynman]] offers the [[Atomic theory|atomic hypothesis]] as the single most prolific scientific concept: "If, in some cataclysm, all [] scientific knowledge were to be destroyed [save] one sentence &nbsp; [...] what statement would contain the most information in the fewest words? I believe it is&nbsp; [...] that ''all things are made up of atoms &nbsp;– little particles that move around in perpetual motion, attracting each other when they are a little distance apart, but repelling upon being squeezed into one another''&nbsp;..." {{harv|Feynman|Leighton|Sands|1963|p=I-2}}</ref> <!--            -->and its motion through space and time, along with related concepts such as energy and force.<!--
   --><ref name="maxwell1878-physicalscience">"Physical science is that department of knowledge which relates to the order of nature, or, in other words, to the regular succession of events." {{harv|Maxwell|1878|p=9}}</ref> <!--            -->More broadly, it is the general analysis of nature, conducted in order to understand how the universe behaves.<!--
   -->{{efn |The term 'universe' is defined as everything that physically exists: the entirety of space and time, all forms of matter, energy and momentum, and the physical laws and constants that govern them. However, the term 'universe' may also be used in slightly different contextual senses, denoting concepts such as the [[cosmos]] or the [[World (philosophy)|philosophical world]].}}<ref name="youngfreedman2014p9">{{harvnb|Young|Freedman|2014|p=9}}</ref><ref name="holzner2003-physics">"Physics is the study of your world and the world and universe around you." {{harv|Holzner|2006|p=7}}</ref>
** [[Outline of physics#Branches of physics|Branches of physics]]
* [[Outline of astronomy|Astronomy]] – study of celestial objects (such as stars, galaxies, planets, moons, asteroids, comets and nebulae), the physics, chemistry, and evolution of such objects, and phenomena that originate outside the atmosphere of Earth, including supernovae explosions, gamma-ray bursts, and cosmic microwave background radiation.
** [[Outline of astronomy#Branches of astronomy|Branches of astronomy]]
* [[Outline of chemistry|Chemistry]] – studies the composition, structure, properties and change of [[matter]].<ref name=definition>{{cite web|url=http://chemweb.ucc.ie/what_is_chemistry.htm |title=What is Chemistry?   |archive-url= https://web.archive.org/web/20210103071622/http://chemweb.ucc.ie/what_is_chemistry.htm|archive-date = 3 January 2021 |publisher= Chemweb.ucc.ie |access-date=|first = John B. |last = Russell}}</ref><ref name="Chemistry">[http://dictionary.reference.com/browse/Chemistry Chemistry] {{Webarchive|url=https://web.archive.org/web/20160305233029/http://dictionary.reference.com/browse/chemistry |date=2016-03-05 }}. (n.d.). Merriam-Webster's Medical Dictionary. Retrieved August 19, 2007.</ref> In this realm, chemistry deals with such topics as the properties of individual atoms, the manner in which atoms form chemical bonds in the formation of compounds, the interactions of substances through intermolecular forces to give matter its general properties, and the interactions between substances through chemical reactions to form different substances.
** [[Outline of chemistry#Branches of chemistry|Branches of chemistry]]
* [[Outline of Earth sciences|Earth science]] – all-embracing term referring to the fields of science dealing with planet Earth. Earth science is the study of how the natural environment (ecosphere or Earth system) works and how it evolved to its current state.  It includes the study of the atmosphere, hydrosphere, [[lithosphere]], and biosphere.
* [[Materials science]] - an [[Interdisciplinarity|interdisciplinary]] field of researching and discovering [[Material|materials]]. Materials scientists emphasize understanding how the history of a material (''processing'') influences its structure, and also the [[Material properties|material's properties]] and performance. The understanding of processing structure properties relationships is called the materials paradigm. This [[paradigm]] is used for advanced understanding in a variety of research areas, including [[nanotechnology]], [[Biomaterial|biomaterials]], and [[metallurgy]].
* [[Computer science]] - the study of computation, information, and automation. Computer science spans theoretical disciplines (such as algorithms, theory of computation, and information theory) to applied disciplines (including the design and implementation of hardware and software).