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COSMOS-Web's 164,000-Galaxy Map: The Cosmic Web in Full Detail
Audio is available on Spreaker — see link below.
The COSMOS-Web survey has produced the clearest map ever made of the cosmic web, cataloguing 164,000 galaxies across 13.7 billion years of cosmic time using JWST. The full dataset is now public, and the science it unlocks is just beginning.
Audio is available on Spreaker — see link below.
Scientists have just published the clearest map ever made of the cosmic web, and the scale of what it shows is difficult to overstate. The COSMOS-Web survey, using the James Webb Space Telescope, has catalogued a hundred and sixty-four thousand galaxies spanning thirteen point seven billion years of cosmic time.
The comparison with Hubble is where the signal really sharpens. Hubble's visible-light instruments blurred structures that were actually distinct.
A quick orientation, because the term "cosmic web" gets used loosely. The structure in question is a skeleton of dark matter and gas filaments stretching across hundreds of millions of light-years.
The research team released everything: the full galaxy catalog, processed maps, the analysis pipeline, and an evolution video tracing cosmic structure assembly over time. That kind of open release compresses the timeline between a major result and the secondary research it enables.
A few unresolved points deserve attention. Distance measurements at this scale cascade uncertainty through the entire map.
The signal here is straightforward. The COSMOS-Web dataset is now in the hands of the broader scientific community, and the secondary research it generates will likely define the next phase of cosmic web science.
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