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A Vast ‘Cosmic Web’ Connects the Universe—Really. Now, We Can Emulate It.

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The Abstract

· Sep 24, 2025 at 9:18 AM

An emulator called Effort.jl can drastically reduce computational time without sacrificing accuracy, which could help solve longstanding mysteries about the cosmos.

A Vast ‘Cosmic Web’ Connects the Universe—Really. Now, We Can Emulate It.
An artistic interpretation of the Dark Energy Spectroscopic Instrument (DESI) year-one data, showing a slice of the larger 3D map that DESI is constructing during its five-year survey. Image: DESI Collaboration/KPNO/NOIRLab/NSF/AURA/P. Horálek/R. Proctor

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You may have noticed that the universe is pretty big—in fact, possibly infinite. These immense scales offer a challenge for scientists who seek to model the “cosmic web,” a network of large-scale structures that link the universe and intersect at nodes where galaxies accumulate into clusters.

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