Watch the MinuteEarth video here – I PROMISE it's really really really good: www.youtube.com/watch?v=pAI1N96t8Vk MinutePhysics & MinuteEarth are on Patreon: www.patreon.com/minutephysics and www.patreon.com/minuteearth This video is about the differences between the corpses or final degenerate dense star forms that dead stars take: black holes, neutron stars, and white dwarfs. The main distinguishing features between them are the mass cutoffs (Chandrasekhar limit and Tolman-Oppenheimer-Volkoff Limit), the matter that makes them up (electrons, protons, neutrons, singularity?), and what holds them up against gravity – not thermal pressure from nuclear fusion like in a star like the sun, but electron or neutron degeneracy pressure (fermi pressure/pauli exclusion principle), and the strong nuclear force, and... nothing (in the case of a black hole). REFERENCES: Chandrasekhar Limit: en.wikipedia.org/wiki/Chandrasekhar_limit Tolman-Oppenheimer-Volkoff Limit: en.wikipedia.org/wiki/Tolman–Oppenheimer–Volkoff_limit Richard Pogge (Ohio State) on Neutron & White Dwarf Stars: www.astronomy.ohio-state.edu/~pogge/Ast162/Unit3/extreme.html Richard Pogge on Star Formation: www.astronomy.ohio-state.edu/~pogge/Ast162/Unit2/starform.html Richard Pogge on Black Holes Differences between galaxies and galaxy clusters: www.newscientist.com/article/dn20026-when-is-a-group-of-stars-not-a-galaxy/ Introductory/review Paper on Neutron Stars: arxiv.org/pdf/1102.5735.pdf White dwarf stars on hyperphysics: hyperphysics.phy-astr.gsu.edu/hbase/Astro/whdwar.html Brown Dwarf: en.wikipedia.org/wiki/Brown_dwarf Support MinutePhysics on Patreon! www.patreon.com/minutephysics Link to Patreon Supporters: www.minutephysics.com/supporters/ MinutePhysics is on twitter - @minutephysics And facebook - facebook.com/minutephysics And Google+ (does anyone use this any more?) - bit.ly/qzEwc6 Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute! Created by Henry Reich

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