Map of the Universe

Eridanus Supervoid

Cosmic void · Region in space

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Eridanus Supervoid
Picture: Piquito veloz´s screenshot. Labeled by Piquito veloz, CC BY-SA 4.0, via Wikimedia Commons.

About Eridanus Supervoid

The light we see from it set out 2.73 billion years ago, when the universe was 11.1 billion years old (redshift 0.22).

The map lists it as a cosmic void 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 huge underdensity in front of the CMB Cold Spot. How much of the Cold Spot it explains is debated.

Key numbers

Distance (comoving, today)3.01 billion light-years (923 Mpc)
Redshift z0.22
Light travel time2.73 billion years
Universe's age when this light left11.1 billion years
Distance methodredshift (Planck 2018 cosmology)
Supergalactic coordinatesSGL 283.6°, SGB -37.7°
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 1.4 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: Cosmic web, a view about 11 billion light-years across.

From Wikipedia

The CMB Cold Spot or WMAP Cold Spot is a region of the sky seen in microwaves that has been found to be unusually large and cold relative to the expected properties of the cosmic microwave background radiation (CMBR).

Excerpt from the Wikipedia article CMB cold spot, licensed CC BY-SA 4.0.

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