Cosmic Scale
Sloan Great Wall
Wall of galaxies · About 1 billion light-years
How big is Sloan Great Wall?
Sloan Great Wall is about 1.4 billion light-years across.
See Sloan Great Wall in 3D, at true scale
The Sloan Great Wall is a vast sheet of galaxies about 1.37 billion light-years long, found in 2003 in the Sloan Digital Sky Survey. It is not bound by gravity as one object: it is a chance alignment of superclusters.
At a glance
| Diameter | 1.4 billion light-years |
|---|---|
| Diameter compared with Earth | 1.0 × 10¹⁸ × Earth |
| Distance | About 1 billion light-years |
| Length | 1.37 billion light-years |
| Found | 2003 |
| Survey | Sloan Digital Sky Survey |
Good to know
- It is about 1/60 of the diameter of the observable universe.
- It was for a time the largest known structure in the universe.
- Over billions of years it will break up into separate clusters.
- Next smaller: Laniakea Supercluster · 520 million light-years
- Next larger: Hercules–Corona Borealis Great Wall · 10 billion light-years