Rejuvenating the Sun and Avoiding Other Global Catastrophes

Our Sun is aging. Like us, it will someday die, and the light that warms and illuminates our planet will go out. All life on Earth will perish with it-unless we do something to stop it.

Is that possible? Martin Beech thinks it is, but we must begin to plan and create the technologies that will save us NOW!

Of course, we do not expect the Sun's demise to happen anytime soon. The Sun is only about halfway through its expected lifetime. We are talking about an event that will not take place for billions of years. But it may take that long to engineer (actually, asteroengineer) our way out of the crisis. And in the meantime, we can use the newly developed knowledge and technologies to protect us from more immediate threats, such as asteroid and comet hits, global warming, and mass extinctions.

For us to keep the Sun shining, we must first change our attitudes. We must put profit and short-term thinking aside. And we must come together to share the risks and costs of the necessary endeavors. Martin Beech will lay out for you, in startling clear and compelling fashion, some basic star science, what the issues are, and how you can join in this massive undertaking to prevent global disaster and keep us in the Sun's life-giving light for the foreseeable future.

Auteur

Associate professor of astronomy, and Head of the Astronomy Department at Campion College, The University of Regina. My main research interests during the past decade have focused on the smaller objects within the solar system (comets, asteroids and meteoroids), but concomitant to this I have continued to perform research related to the structure and evolution of stars (the area of my doctoral studies). The book being proposed here is partly based upon a series of research papers that I have published over the years and on material used in a solar system studies class. The topic of asteroengineering was recently the focus of an 'opinion article' I wrote for the May 2006 issue of Astronomy Now magazine, and an editorial piece in the May 2006 issue of Smithsonian Air and Space magazine.

Home web page: http://hyperion.cc.uregina.ca/~astro/mbeech.html

Résumé
This book is about an audacious idea: asteroengineeringliterally, the physical engineering of a star, especially the star we call our Sun. It is an idea on the grandest of scales. Part science fiction, part science fact, asteroengineering is a response to a very definite and a very real problem, a problem that our distant descendants will one day have to face. It is also a universal problem that will be experienced at some stage or other by every extraterr- trial civilization that has or will exist. Indeed, the problem to be addressed resides within the parent stars of each and every li- supporting planetary system within our galaxy. In short, stars puff up to become luminous red giants as they age, and by doing this they vaporize those planets previously situated in the habitability zone where life can otherwise thrive. As their parent star ages and approaches the red giant phase, a civilization has two options open to it: stay at home, or pack up and leave. The latter option would require the hapless civilization to cocoon itself within giant spa- ships and then set itself adrift in the uncharted depths of space. If a civilization chooses to stay put, however, then all life will endunless, that is, something is done about the demise of its parent star.

Contenu
A Universal Problem.- It's a Matter of Time.- The Sun, Inside and Out.- The Price of Doing Nothing.- Rejuvenating the Sun.- Stars Transformed.- Between Now and Then.