Arp Objects, including: Messier 87, Messier 82, Pinwheel Galaxy, Ngc 4631, Centaurus A, Whirlpool Galaxy, Messier 32, Messier 49, Messier 60, Messier ... Antennae Galaxies, Ngc 1569, Mice Galaxies

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 contains chapters focused on Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, Arp objects, and Arp objects.