Astronomers have built the most detailed map yet of the universe with the James Webb Space Telescope. The survey covers how galaxies have changed since the early universe, about 13 billion years ago. It also shows how they fit into the cosmic web, which is the largest known structure in existence. The cosmic web is made of gas filaments, stars, empty spaces, and sheets of dark matter. It connects galaxy clusters and clusters of clusters across the universe.
scienceIntermediate1 min read7/6/2026
James Webb builds a detailed map of the universe
Astronomers used the James Webb Space Telescope to create its largest survey of the universe. The map shows galaxy changes across about 13 billion years and reveals part of the cosmic web.
