Talk:Extremal black hole

External links modified
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 * Added archive https://web.archive.org/web/20120321162544/http://staff.science.uva.nl/~jpschaar/report/node35.html to http://staff.science.uva.nl/~jpschaar/report/node35.html

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Cheers.— InternetArchiveBot  (Report bug) 13:22, 26 September 2017 (UTC)

Make paragraph or page: smallest black hole in astronomy
The article isn't about it, but we should mention the observational facts as a reference (also facts are important). — Preceding unsigned comment added by 2A02:587:4104:B0C1:800F:A5C:F7B3:305F (talk) 19:45, 13 July 2020 (UTC)