Introduction When I wrote the first edition of The Atlas of the Universe , in 1970, the great astronomical revolution was just beginning. Electronic devices had started to take over from photographic plates, and computers had become a real force even though they were very crude compared to those of today. Space research was in full swing: men had already landed on the Moon, probes had been sent out to the nearer planets, and the first astronomical observatories were in orbit round the Earth. Since then a great deal has happened. Great new telescopes have been built, allowing us to explore the far reaches of the universe; new theories have forced us to change or even abandon many of the older ideas, even if we have yet to solve fundamental problems such as that of the origins of the universe itself. The progress of space research has been less smooth. There have been spectacular triumphs, but also some serious setbacks. However, there is one very encouraging note; all nations are working together in space, and the International Space Station now orbiting the Earth really is completely international. Undoubtedly there will be further problems during the next few decades, but all in all the outlook remains bright. There are still people who question the value of the space programs, but the cost of a planetary probe does not seem excessive when compared to that of, say, a nuclear submarine, and there are many benefits to mankind: for example, medical research is now closely linked with astronautics. There is a major difference between this Atlas and others. We are used to superb, highly colored images produced by the world's greatest telescopes, but in general the colors are added to help in scientific analysis. Obviously I have included some of these false-colored pictures here, but I have concentrated upon things which can actually be seen by an observer who is adequately equipped. This is not always possible, but I have kept to my rule as far as I can. Since the previous edition, in 2003, much has happened, and for this latest edition I have made further amendments; I hope we are now up to date to May 2005. Patrick Moore Excerpted from Atlas of the Universe by Patrick Moore, Patrick Moore All rights reserved by the original copyright owners. Excerpts are provided for display purposes only and may not be reproduced, reprinted or distributed without the written permission of the publisher.