Talk:UDFy-38135539

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Fact-check[change source]

Can someone please fact-check this article? Gn-z11 is currently the oldest-known galaxy. TheSportsKid0111 (talk) 23:15, 13 December 2016 (UTC)

Its age is only estimated from its distance. The distance is the primary characteristic, deduced from the red-shift. See En wiki's [1], where proper distance is "where a distant object would be at a specific moment of cosmological time, which can change over time due to the expansion of the universe".
I'm not inclined to change the article because of the discussion on [2] shows that simple summaries of this point are difficult to make technically accurate. Macdonald-ross (talk) 13:56, 14 December 2016 (UTC)