Massive Cosmic Filament Reveals Synchronized Galaxy Spins, Posing New Spin-Formation Questions

Astronomers identified a colossal cosmic filament about 50 million light-years long containing roughly 300 galaxies, many of which appear to rotate in sync with the filament at about 110 km/s. This coordinated motion challenges standard ideas of how galaxies acquire spin (tidal torque) and suggests large-scale structure may influence spins more than expected. It’s an early, single striking case that requires more surveys and simulations to determine whether this synchrony is common and how theory might adapt.