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huge wall of galaxies
Sloan Great Wall
When it was discovered, it was the largest known structure in the universe.
Key figures
- Length
- about 1.4 billion light-years
- Distance
- about 1 billion light-years
- Discovered
- 2003 in the data of the Sloan Digital Sky Survey
Interesting facts
- It is probably not one connected whole, but a row of superclusters one behind another – gravity does not hold it together.
Where is it?
Sloan Great Wall belongs to the “The observable universe” level of the Cosmic Zoom (field of view about 93 billion light-years). As far as we can see at all. Light needs time – looking into the distance means looking into the past. At the edge glows the oldest light, from 380,000 years after the Big Bang. Right in the middle, invisibly small, is where we are.
Books on this topic
BookAstrophysics for People in a HurryNeil deGrasse TysonBookBlack HolesBrian Cox, Jeff ForshawBookCosmos: Explore the Wonders of the UniverseDKBookUniverseDKChildren's bookKnowledge Encyclopedia Space!DKChildren's bookSpace EncyclopediaNational Geographic Kids
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