Konstantinos Migkas and team mapped a 23-million-light-year cosmic web filament with temperatures around 10 million degrees, more than 20 times the Milky Way’s size, detected via the Sunyaev-Zel’dovich effect and Planck data. Durham University simulations predict 80–100 undetected Milky Way satellite galaxies, the so‑called orphan galaxies stripped of dark matter halos, potentially solving the missing…
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