Editing Neutronium (section)

==In neutron stars==
{{Main|Neutron star}}
[[Image:Neutron star cross section.svg|thumb|Cross-section of neutron star. Here, the core has [[Neutron|neutrons]] or [[Neutron degenerate matter|neutron-degenerate matter]] and [[quark matter]].]]
Neutronium is used in popular physics literature<ref name=InglisArkell/><ref name=Zhuravleva/> to refer to the material present in the cores of neutron stars (stars which are too massive to be supported by [[electron degeneracy pressure]] and which collapse into a denser phase of matter). In scientific literature the term  "neutron-degenerate matter"<ref>{{cite book | last1 = Angelo | first1 = J. A. | date = 2006 | title = Encyclopedia of Space and Astronomy | url = https://books.google.com/books?id=VUWno1sOwnUC&pg=PA178 | page = 178 | publisher = [[Infobase Publishing]] | isbn = 978-0-8160-5330-8 | access-date = 2016-10-28 | archive-date = 2019-12-15 | archive-url = https://web.archive.org/web/20191215113119/https://books.google.com/books?id=VUWno1sOwnUC&pg=PA178 | url-status = live }}</ref> or simply [[neutron matter]] is used for this material.<ref>{{Cite journal |last1=Gandolfi |first1=Stefano |last2=Gezerlis |first2=Alexandros |last3=Carlson |first3=J. |date=2015-10-19 |title=Neutron Matter from Low to High Density |url=https://www.annualreviews.org/doi/10.1146/annurev-nucl-102014-021957 |journal=Annual Review of Nuclear and Particle Science |language=en |volume=65 |issue=1 |pages=303–328 |doi=10.1146/annurev-nucl-102014-021957 |issn=0163-8998|arxiv=1501.05675 |bibcode=2015ARNPS..65..303G }}</ref>