The Ladder of Scale · structure

Eridanus Supervoid

Void · 1.8 billion ly

Within
—
Distance (ly)
3000000000
Recognised
2007
Population
an underdensity
Size (ly)
1800000000
Kind
Void

Notes

Proposed to explain the CMB Cold Spot — an unusually cool patch of the microwave background — as light losing energy crossing a vast emptiness. The explanation is still argued over.

Open on the The Ladder of Scale shelf — the interactive card, the filters, and everything alongside it.

From the Cosmic Structures database in Notion, last edited 2026-08-20. This page is the row, rendered by the build; nothing on it is written by hand.