Cosmic Web in Sharp Focus: Direct Picture Maps the Universe’s Hidden Gas Highways
Astronomers using the VLT's MUSE instrument captured the clearest image yet of a cosmic filament—about 3 million light-years long—connecting two actively forming galaxies when the universe was ~2 billion years old. The direct detection of faint intergalactic gas, traveling roughly 12 billion years to Earth, aligns with simulations and offers new insight into how gas flows through the cosmic web to fuel galaxy growth and star formation.