What is the key physical difference regarding stability between the Local Group and most Superclusters?
Answer
The Local Group is a gravitationally bound system, but most superclusters are not.
The text emphasizes that the Local Group maintains integrity due to mutual gravitational attraction resisting cosmic expansion, while superclusters, due to their immense size and lower density, are generally not gravitationally bound as a whole.
#Videos
Groups and Clusters of Galaxies - YouTube
Related Questions
Which galaxy is identified as the single largest member of the Local Group?What is the key physical difference regarding stability between the Local Group and most Superclusters?What is the approximate diameter spanned by the Local Group?How is the nearest significant structure to the Local Group, the Virgo Cluster, characterized?How is the Local Group classified based on galaxy count compared to richer galaxy clusters?What is the structure that the Virgo Supercluster is now known to be a component of, based on modern mapping?What large-scale feature interweaves with superclusters on maps of the universe?What is the approximate diameter cited for the Virgo Supercluster?What force primarily dictates the overall structure of a supercluster, in contrast to the Local Group?What is required, besides visible galaxies, to provide the mass needed to bind fast-moving galaxies in a rich cluster like Virgo?Which structure in the cosmic address follows the Local Group?