This book offers a unique review of how astronomical information handling (in the broad sense) evolved in the course of the 20th century, and especially during its second half. It will be very useful for researchers, teachers, editors, publishers, librarians, computer scientists, sociologists of science, research planners and strategists, project managers, public-relations officers, plus those in charge of astronomy-related organizations, as well as by students aiming at a career in astronomy or related space science.

Astronomyhasalwaysbeenoneoftheeasiestofthesciencestoconveyto the public. That is partly because it produces spectacular pictures that can be explained (at least in part) and admired, partly because understanding of astronomy usually does not depend upon a knowledge of a complex cl- si?cation system or esoteric terminology, and partly because its extremes in distances and times challenge our imagination and philosophies. Most scientists enjoy sharing with others the discoveries made by th- selves and their colleagues. The primary purpose of scienti?c research is to discover, to learn, and to understand. When we succeed, we enjoy sh- ing that understanding. Education is most pleasurable when our audience wishes to learn and we have something important to convey. A?eldthatdoesnotcommunicatee?ectivelywiththepublicsoonlooses its interest and support. Author Andr ́ e Heck explains the many di?erent ways in which professional communication now occurs while Leslie Sage explains how such communication should be done. Astronomy done with spacecraft and large equipment is very expensive and the funds for those ultimately come from the public. The cost of astronomy prorated over the number of research astronomers is perhaps the highest in all the sciences. If astronomers do not share their results with the public, they will loose its support. However, for most astronomers the desire to share and educate dominates over the pragmatic need to win public support. With the advent of new communication techniques (television, videos, CDs, DVDs, animation, simulations) we have new methods to commu- cate, in addition to the conventional ones of the printed and spoken word.

Astronomy isthemostancientsciencehumanshavepracticedonEarth. Itisascienceofextremesandoflargenumbers:extremesoftime–fromthe big bang to in?nity –, of distances, of temperatures, of density and masses, ofmagnetic?eld,etc.Itisasciencewhichishighlyvisible,notonlybecause stars and planets are accessible in the sky to the multitude, but also - cause the telescopes themselves are easily distinguishable, usually on top of scenic mountains, and also because their cost usually represent a subst- tialproportionofthenation’sbudgetandofthetaxpayerscontributionsto that budget. As such, astronomy cannot pass unnoticed. It touches on the origins of matter, of the Universe where we live, on life and on our destiny. It touches on philosophy as well as on religion. Astronomy is the direct c- tactofhumankindwithitsoriginsandtheimmensityofuniversalnature.It is indeed a science of observation where experimentation is practically - possible and which is ruled by mathematics, physics, chemistry, statistical analysis and modelling, while o?ering the largest number of veri?cations of the most advanced theories of fundamental physics such as general r- st ativity and gravitation. At the beginning of the 21 century astronomy is clearly a multidisciplinary activity touching on all aspects of science. It is therefore logical that in the past and still now, astronomy has attracted the most famous scientists, be they pure observers, mathematicians, physicists, biologists, experimentalists, and even politicians.

I am most grateful to Andr ́ e Heck for his invitation to write a foreword to OSA Volume 4 – I will use this valued opportunity to emphasise those topics in Vol. 4 which I consider important even if other topics may be of even greater importance in the universal scale of things. At the outset let me say that I commend Vol. 4 to its readers – it contains much of very great interest for organisations and strategies in astronomy. A topic which I consider to be of very great importance at this time is Adverse Environmental Impact on Astronomy. There are two papers on this topic in OSA 4 – Cohen on Strategies for Protecting Radio Ast- nomy and Schwarz on Light Pollution Control. The growth in the extent of use, the power and spectral demand for radio transmission continues to increase virtually exponentially. The impact on the ‘listening’ services such as radio astronomy has been severe. Only by creativity in developing new techniques for radio noise (including legal transmissions) reduction and by participating fully in the allocation process for radio frequencies has radio astronomy developed to the powerful investigative tool it is today.

The present volume gathers together the talks presented at the second colloquim on the Future Professional Communication in Astronomy (FPCA II), held at Harvard University (Cambridge, MA) on 13-14 April 2010. This meeting provided a forum for editors, publishers, scientists, librarians and officers of learned societies to discuss the future of the field. The program included talks from leading researchers and practitioners and drew a crowd of approximately 50 attendees from 10 countries. These proceedings contain contributions from invited and contributed talks from leaders in the field, touching on a number of topics. Among them: - The role of disciplinary repositories such as ADS and arXiv in astronomy and the physical sciences; - Current status and future of Open Access Publishing models and their impact on astronomy and astrophysics publishing; - Emerging trends in scientific article publishing: semantic annotations, multimedia content, links to data products hosted by astrophysics archives; - Novel approaches to the evaluation of facilities and projects based on bibliometric indicators; - Impact of Government mandates, Privacy laws, and Intellectual Property Rights on the evolving digital publishing environment in astronomy; - Communicating astronomy to the public: the experience of the International Year of Astronomy 2009.

Strasbourg Astronomical Observatory is quite an interesting place for historians: several changes of nationality between France and Germany, high-profile scientists having been based there, big projects born or installed within its walls, and so on. Most of the documents circulating on the history of the Observatory and on related matters have however been so far poorly referenced, if at all. This made necessary the compilation of a volume such as this one, offering fully-documented historical facts and references on the first decades of the Observatory history, authored by both French and German specialists. The experts contributing to this book have done their best to write in a way understandable to readers not necessarily hyperspecialized in astronomy nor in the details of European history. Several appendices conclude the book: lists of council members and of Observatory scientific personnel, as well as a compendium of the institutional publications until the year 2000.

This detailed examination of our steps into space is viewed from our potential future there – on Mars to be exact – and considers how we will reach that point.