1023.2 m · Cosmic structure
Virgo Cluster
≈15 million light-yearsThe nearest major galaxy cluster, crowded with thousands of galaxies and hot intracluster gas.
≈15 million light-years → ≈93 billion light-years
Cosmic scale
Galaxies become threads inside the observable horizon.
At the largest scales, boundaries are defined by gravity, survey geometry or the distance light has had time to reach us. These are regions and horizons, not objects with walls.
Enter this realm in the scale engine
Questions this realm answers
Start with curiosity.
- How large is the observable universe?
- What is Laniakea?
- How much larger is the cosmic web than the Milky Way?
4 source-backed coordinates
Every landmark in cosmic scale.
Ordered by the actual logarithm of its SI value.
1024.7 m · Cosmic structure
Laniakea Supercluster
≈520 million light-yearsA vast basin of galactic motion that includes the Milky Way and the Virgo Cluster.
1025.1 m · Cosmic structure
Sloan Great Wall
≈1.37 billion light-yearsA colossal arrangement of galaxy clusters and filaments discovered in large redshift surveys.
1026.9 m · Cosmology
Observable Universe
≈93 billion light-yearsThe present-day diameter of the region whose light or descendants can in principle reach us.
Guided routes