What concept is used to describe the physical span across the Virgo Cluster itself?
Answer
Perhaps 8 to 10 million light-years across
When focusing solely on the physical boundaries of the Virgo Cluster, the structure is described as encompassing a substantial region. Specifically, its extent is estimated to stretch perhaps 8 to 10 million light-years across. This measurable physical volume is vastly greater than the Milky Way's 100,000 light-year diameter, illustrating the scale difference between a single galaxy and a cluster containing over a thousand of them, though this extent is still significantly smaller than the hundreds of millions of light-years covered by the encompassing Laniakea Supercluster.
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Is The Milky Way In The Virgo Supercluster? - Physics Frontier
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