Discovery of a galaxy cluster with a violently starbursting core at z=2.506 · HackerPapers discussionshttps://hackerpaper.kaipfister.de/p/1604.07404/Collected HN comments and submissions linking this paper.enMon, 02 Nov 2026 11:16:22 GMTDiscovery of a galaxy cluster with a violently starbursting core at z=2.506 — mentioned by okkethttps://news.ycombinator.com/item?id=12394605urn:hackerpapers:mention:1604.07404:12394605Tue, 30 Aug 2016 22:52:48 GMT<p>It pushed the earliest formation of such clusters ~700 million years further towards the Big Bang and adds to the mystery how such clusters could exist so early in the universe. We currently have no good answer for this question. From the abstract of the paper: The large integrated stellar mass at such high redshift challenges our understanding of massive cluster formation. http://arxiv.org/abs/1604.07404</p><p><a href="https://hackerpaper.kaipfister.de/p/1604.07404/">Paper and discussion history</a>. A mention is not an endorsement.</p>astro-ph.GA