Googolstars
DESI turns spectra from millions of galaxies and quasars into a 3D record of cosmic structure. Its completed five-year map traces how matter clusters across roughly 11 billion years of history, providing a powerful test of cosmic expansion and dark energy.
The scene renders DESI as a butterfly-shaped survey footprint inside the Observable Universe. The volume marks coverage across sky area and redshift depth; its glow and scale are visual guides, not a literal single-object position or physical boundary.
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