The most detailed map of the cosmic web ever produced has been unveiled, tracing the universe's large-scale structure back to when it was just one billion years old.
A team of researchers, led by the University of California, Riverside, has published the groundbreaking study in The Astrophysical Journal. The map was created using data from NASA's James Webb Space Telescope (JWST), offering an unprecedented view of the universe's foundational architecture.
Key Findings and Methodology
The cosmic web is a massive, large-scale structure composed of filaments and sheets of dark matter and gas that surround vast, nearly empty voids. Galaxies form and evolve along these filaments, meaning this map is a guide to the universe's very skeleton.
The map was created as part of the COSMOS-Web survey, the largest JWST General Observer program to date. It covers an area of the sky equivalent to approximately three full moons. By using JWST's powerful infrared instruments, the team detected faint, distant galaxies that were invisible to previous telescopes, like the Hubble Space Telescope. This new capability allowed for more precise distance measurements and revealed significantly finer structural details.
The resulting map traces the distribution and evolution of galaxies within cluster and filamentary structures across cosmic time, from just one billion years after the Big Bang to the present day. Data that previously appeared as single, blurry structures in Hubble images have now been resolved into multiple, distinct components.
Data and Public Release
The research team has publicly released the following data products for other scientists and the public to explore:
- The large-scale structure maps.
- A catalog of 164,000 galaxies.
- A video depicting the evolution of the cosmic web.
Funding and Support
The study was supported by grants from the European Union's Horizon 2020 research and innovation program.