Living in a Void: Testing the Copernican Principle with Distant Supernovae · HackerPapers discussionshttps://hackerpaper.kaipfister.de/p/0807.1443/Collected HN comments and submissions linking this paper.enMon, 02 Nov 2026 11:16:22 GMTLiving in a Void: Testing the Copernican Principle with Distant Supernovae — mentioned by aurareturnhttps://news.ycombinator.com/item?id=46691338urn:hackerpapers:mention:0807.1443:46691338Tue, 20 Jan 2026 12:56:05 GMT<p>Side note, there’s been a few recent publications showing that dark energy may not be needed to explain what we are seeing. 1. Inhomogeneity backreaction (Moffat 2025) Large-scale cosmic inhomogeneities such as voids and dense regions can create an effective expansion history that mimics evolving dark energy when averaged using standard homogeneous assumptions. https://arxiv.org/abs/2503.20912 2. Timescape cosmology (Wiltshire) Because cosmic voids expand faster than dense regions and dominate volume at late times, observers may infer acceleration from redshift data even if the universe is…</p><p><a href="https://hackerpaper.kaipfister.de/p/0807.1443/">Paper and discussion history</a>. A mention is not an endorsement.</p>astro-ph