The Scale of the Universe (Classic Reprint)

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Excerpt from The Scale of the UniverseLet us first recall that the stellar universe, as we know it, ap pears to be a very oblate spheroid or ellipsoid - a disk-shaped sys tem composed mainly Of stars and nebulae. The solar system is not far from the middle plane Of this ¿attened organization which we call the galactic system. Looking away from the plane we see relatively few stars, looking along the plane, through a great depth Of star-populated space, we see great numbers Of Sidereal Objects constituting the band of light we call the Milky Way. The loosely organized star clusters, such as the Pleiades, the dif fuse nebulae such as the great nebula Of Orion, the planetary nebulae, Of which the ring nebula in Lyra is a good example, the dark nebulosities - all these Sidereal types appear to be a part Of the great galactic system, and they lie almost exclusively along the plane Of the Milky Way. The globular clusters, though not in the Milky Way, are also affiliated with the galactic system, the spiral nebulae appear to be distant Objects mainly if not entirely outside the most populous parts of the galactic region.This conception of the galactic system, as a ¿attened, watch Shaped organization of stars and nebulae, with globular clusters and spiral nebulae as external objects, is pretty generally agreed upon by students of the subject, but in the matter of the distances Of the various Sidereal Objects - the Size Of the galactic system there are, as suggested above, widely divergent opinions. We shall, therefore, first consider brie¿y the dimensions Of that part of the stellar universe concerning which there is essential unanim ity of Opinion, and later discuss in more detail the larger field.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.