Galactic · Cosmic structure
Local Group
≈10 million light-yearsA gravitational neighbourhood containing the Milky Way, Andromeda and dozens of smaller galaxies.
Galactic ↔ Cosmic
How large is the Virgo Cluster compared with the Local Group?
Two gravitationally organized galaxy regions reveal the hierarchy beyond individual galaxies.
Linear ratio1.5×
Using the stated linear measurements, Virgo Cluster is 1.5× Local Group.
Cosmic · Cosmic structure
Virgo Cluster
≈15 million light-yearsThe nearest major galaxy cluster, crowded with thousands of galaxies and hot intracluster gas.
The answer
A ratio, an analogy and the definitions behind both.
Using the stated linear measurements, Virgo Cluster is 1.5× Local Group.
About 1.5× Local Group linear spans fit across the selected measurement of Virgo Cluster.
representative group diameter versus representative cluster diameter
The metre values can be divided as linear spans, but the two entries do not describe identical kinds of boundary.
Local Group is model-dependent; virgo Cluster is model-dependent.
Representative, variable and model-dependent values are useful for perspective only when their status remains visible.
Measurement ledger
What exactly was divided?
| Landmark | Value | Measurement | Certainty | Source |
|---|---|---|---|---|
| Local Group | ≈10 million light-years | representative group diameter | Model-dependent | NASA Science ↗ |
| Virgo Cluster | ≈15 million light-years | representative cluster diameter | Model-dependent | NASA Science ↗ |