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Simone Ferraro

2 articles · 17 co-authors · latest: 2026-05-18

Cosmic voids are not quite empty

The Universe resembles a sponge with huge pores—voids. Almost devoid of stars, these voids, as astronomers discovered, still harbor a thin gas. Using fast radio bursts, scientists managed to 'weigh' this invisible substance. It turned out to be about one and a half times less than the cosmic average
arXiv:2605.01994 · 2026-05-03

Cosmic Wake Exposes Hidden Motions

The moving lens effect bends the oldest light, revealing how galaxies and dark matter glide across the sky. Combined with other signals, it will build a 3D map of cosmic flows, testing gravity and the growth of structure.
arXiv:2605.18938 · 2026-05-18