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Loading contentA thread of galaxies and dark matter stretching between clusters, forming the strands of the cosmic web.
Filaments are the largest thread-like structures in the Universe, channelling galaxies and gas between clusters and bounding the great voids. They contain much of the 'missing' ordinary matter as warm-hot intergalactic gas.
Facts on this topic will be cited from these primary and reference sources.
Southern-hemisphere observatory data and imagery (VLT, ALMA partner).
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.