Cosmic Dawn III Recreates the Early Universe Epoch of Reionization in Unprecedented Detail

January 6, 2023 • by Marc Airhart

Scientists create the most detailed and accurate simulation ever produced of the first billion years of the universe.

White filaments stretch like a chaotic spider web across a blue background

The CoDa III simulation shows galaxies forming in the early universe along the filaments and knots of the “cosmic web.”


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Illustration of the Wolf 1130ABC triple system, composed of the red dwarf star Wolf 1130A, its close and compact white dwarf companion Wolf 1130B, and the distant brown dwarf tertiary Wolf 1130C. The three components of this system are shown scaled to their relative sizes. Image credit: Adam Burgasser, UCSD.

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A photo of the dark night sky above greenhouses in West Texas.

McDonald Observatory

Local Properties Keep Stars Bright with Night Sky-Friendly Lighting

The background shows the blackness of space, dotted with colorful stars and galaxies. In a pullout box at the top left, an arrow points to a fuzzy red blob shaped like a jelly bean. A label reads JADES-GS-z14-0.

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