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Ad Astra Winter 2008

Ad Astra

The magazine of the
National Space Society

Volume 20, Number 4
Winter 2008

Featuring a Special Report on
"The Threat of Impact"
[1.7 MB PDF]

Return to
Back Issue Index

On The Cover: An artist's rendering of an asteroid moments before an imminent impact with Earth. The question of such an impact is not if but when. Illustration: Stephen Prater.

Featured Articles:

Note: The entire Special Report on "The Threat of Impact" (comprising pages 22-46 of this issue) is available as a PDF file [1.7 MB].

16
SHACKLETON DOME
What it will take to build a 25-mile-diameter, 5,000-foot-tall domed lunar city.
By Edward McCullough

22
BEYOND THE SHUTTLE
With the pending retirment of the space shuttle fleet, NASA makes plans to use Russian spacecraft to maintain the International Space Station.
By Ted Spitzmiller

30
DEALING WITH THE THREAT OF IMPACT
Detection, deflection, or deep impact?
By Russel L. Schweickart

36
REMOVING THE BLINDERS
One of the greatest threats to civilization remains unaccounted for.
By Peter Garretson

40
FOOTPRINTS ON NEO'S
Possibly more accessible than the Moon, could a near Earth asteroid be the next stop for manned space exploration?
By Mark Williamson

46
NEAR EARTH OPPORTUNITIES
A new way to consider the asteroid threat
By Brad Blair

48
SPACE SOLAR POWER: ENERGY FOR THE FUTURE
By Lt.Col. Paul E. Damphousse, USMC

50
SPACE SOLAR POWER:
AN INVESTMENT FOR TODAY, AN ENERGY SOLUTION FOR TOMORROW

A statement of support from the National Space Society


Departments:

9
LETTER FROM HEADQUARTERS
The Next Fifty Years
By George Whitesides, NSS Executive Director

11
LETTER FROM THE EDITOR
The Big Picture
By Mark Mayfield

13
NSS ANNOUNCEMENTS
NSS Mourns former Director Jim Benson, space visionary and founder of SpaceDev
Chapter Excellence and Special Merit Awards 2008
Australian Space: A pivotal conference at a pivotal time

52
LETTER FROM THE EXECUTIVE COMMITTEE CHAIR
Perspectives
By Gary Barnhard

54
SPACE SETTLEMENT
Space Settlement and Space Tourism: An Ideological Marriage
By Mark Hopkins

56
BOOKS
Return to Luna, edited by Eric L. Reynolds
Reviewed by Bart Leahy
NASA/ART: 50 Years of Exploration, by James D. Dean and Bertram Ulrich
Reviewed by Deborah Martin
A Passion for Mars: Intrepid Explorers of the Red Planet, by Andrew Chaikin
Reviewed by Mark Mayfield

60
CHAPTER LISTINGS

64
SIGNING OFF
Forty Years Ago

Return to Back Issue Index


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