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University Of Massachusetts-Amherst - Fall 2012 | ||
Section 01 | ||
 | Stars and Galaxies (8th Edition) by Michael A. Seeds, Dana E. Backman, Backman Seeds Paperback, 480 Pages, Published 2012 ISBN-10: 1-111-99066-2 / 1111990662 ISBN-13: 978-1-111-99066-4 / 9781111990664 strong force (160) One of the four forces of nature; the strong force binds protons and neutrons together in atomic nuclei. ... ofa massive star that develops an iron core and collapses after it has lost its outer layers of hydrogen. supernova (type II ) ... collapse hypothesis. total lunar eclips | |