Articles on Virgo Cluster, Including - Messier 100, Messier 87, Messier 61, Messier 49, Messier 58, Messier 59, Messier 60, Messier 84, Messier 85, Messier 86, Messier 88, Messier 89, Messier 90, Messier 91, Messier 98, Messier 99 (Paperback)

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Hephaestus Books represents a new publishing paradigm, allowing disparate content sources to be curated into cohesive, relevant, and informative books. To date, this content has been curated from Wikipedia articles and images under Creative Commons licensing, although as Hephaestus Books continues to increase in scope and dimension, more licensed and public domain content is being added. We believe books such as this represent a new and exciting lexicon in the sharing of human knowledge. This particular book is a collaboration focused on Virgo Cluster.More info: The Virgo Cluster is a cluster of galaxies at a distance of approximately 59 4 Mly (18.0 1.2 Mpc) away in the constellation Virgo. Comprising approximately 1300 (and possibly up to 2000) member galaxies, the cluster forms the heart of the larger Local Supercluster, of which the Local Group is an outlying member. It is estimated that its mass is 1.2 M out to 8 degrees of the cluster's center or a radius of about 2.2 Mpc. The elliptical galaxies are more centrally concentrated than the spiral galaxies.