Map of the Universe

Hercules–Corona Borealis Great Wall

Large-scale structure · Possible large cosmic structure

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Hercules–Corona Borealis Great Wall
Picture: István Horváth, Zsolt Bagoly, Jon Hakkila, L. V. Tóth, Public domain, via Wikimedia Commons.

About the Hercules–Corona Borealis Great Wall

The light we see from it set out 10.3 billion years ago, when the universe was 3.53 billion years old (redshift 1.85).

The map lists it as a large-scale structure and shows it at the scale of the large-scale universe, drawn on the supergalactic plane.

Its distance or nature is debated, and the map shows one published value.

A claimed 10-billion-light-year concentration of gamma-ray bursts. Heavily contested.

Key numbers

Distance (comoving, today)16.6 billion light-years (5,080 Mpc)
Redshift z1.85
Light travel time10.3 billion years
Universe's age when this light left3.53 billion years
Distance methodredshift (Planck 2018 cosmology)
Supergalactic coordinatesSGL 87.2°, SGB +60.8°
On the mapThe dashed circle marks its approximate size around its centre. Structures this large have no sharp edge, and the circle is not drawn to an exact shape.
Sizeabout 9.8 billion light-years across

Where it is

Its place in the universe, from the inside out: Observable universe.

Zoom out to see it in context: Observable universe, a view about 100 billion light-years across.

From Wikipedia

The Hercules–Corona Borealis Great Wall (HCB) or simply the Great Wall or the Great Gamma-Ray Burst Wall is a putative galaxy filament that, if confirmed, would be one of the largest known structures in the observable universe, measuring approximately 10 billion light-years in length, or ~10.8% the length of the observable universe.

Excerpt from the Wikipedia article Hercules–Corona Borealis Great Wall, licensed CC BY-SA 4.0.

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