Talk:PSR J1719−1438 b

It suggests a core of metastable metallic hydrogen (MSMH) imo i.e. dark matter, a remnant of a stellar interior. Diamond "planet" was once a star
A new physics is emerging at last. Quark level modelling is required to confirm the metastable nature of metallic hydrogen produced in stellar interiors imo. It's been created sparingly in the lab and guess what: it's jet black. Alan Lowey — Preceding unsigned comment added by 195.59.118.104 (talk) 09:47, 26 August 2011 (UTC)


 * What you said makes no sense. dark matter isn't this, unless you're talking about CDM baryonic dark matter like MACHOs. Why do you need QCD modeling? It's not as dense as a neutron star, or even close. The protons have not been compromised. 70.24.244.20 (talk) 07:43, 19 September 2011 (UTC)

Diamond -- not
With a density of 23 g/cm3 (per the Science article) it isn't diamond (density ~3.5 g/cm3) despite all the press hype. Vsmith (talk) 18:47, 21 April 2014 (UTC)
 * True; pressure would increase diamond's density at the core, but hardly by a factor of 6. I wonder if there's a theoretical model for this presumed superdense carbon allotrope? Our article only mentions allotropes slightly (3%) more dense than diamond... --Roentgenium111 (talk) 17:05, 1 May 2014 (UTC)

White Dwarf Planet
I deleted all the non-sourced (except for a random blog post) nonsense about the planet being a white dwarf. White dwarf stars are composed of electron degeneracy matter which would be millions of times denser than this planet's density. Ergzay (talk) 08:22, 24 May 2015 (UTC)


 * It's hardly nonsense. In fact, a research paper has been published on the topic, so I'd say it deserves to be mentioned. According to that paper, the "planet" is only what's left of a white dwarf after the pulsar's radiation stripped away the overwhelming majority of its mass.


 * Keep in mind that what's left of the white dwarf now is only about a Jupiter mass, which is much smaller than any normal white dwarf--and remember that degenerate matter expands as the pressure on it is relieved. That can easily account for the relatively low density. — Preceding unsigned comment added by 203.57.211.237 (talk) 14:11, 6 October 2016 (UTC)

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