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Richard Stiskalek

2 articles · 9 co-authors · latest: 2025-09-11

How Galaxies Spin: A Simple Rule Failed

Scientists tested hundreds of galaxies against the rule 'every twist in light matches a twist in spin.' While the dwarf NGC 1560 followed suit, the overall sample showed 'extra' motions that don't match the visible pattern, complicating both dark matter models and alternative theories.
arXiv:2508.03569 · 2025-08-05

Cosmic Clocks Diverge: A New Mystery of the Universe's Expansion

A new study used only pulsating Cepheid stars to calculate the expansion rate of the Universe. The resulting value of 71.1 (km/s)/Mpc turned out to be lower than the previous 'gold standard' and even further from the Planck satellite data. This sharpens the 'Hubble tension' and suggests our knowledg
arXiv:2509.09665 · 2025-09-11