The National Space Society vision is people living and working in space

Ad Astra Volume 27 Number 1

Ad Astra

The magazine of the
National Space Society

Volume 27, Number 1
Spring 2015

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Back Issue Index

Cover image: Grand Prize Winner of the 2014 NSS Roadmap to Space Settlement International Student Art Contest: “Arcturus Space Settlement” by Bogdan Alexandru Cionca, 11th Grade, Bucharest, Romania, illustrating Roadmap Milestone 19.

Featured Articles:

12
THE OTHER SUBORBITAL MARKET:
COMMERCIAL AND RESEARCH PAYLOADS

By Clifford McMurray

16
CHASING THE DREAM
Sierra Nevada Corp’s Mini Shuttle
By Mark Williamson

22
REDUCING THE RISK OF LONG-DURATION SPACEFLIGHT
By Marianne Dyson

28
EQUILIBRIUM
Astronauts relearn how to plant feet on the ground after long-duration spaceflight
By Travis K. Kircher

32
EFT-1: WHAT HAPPENS NEXT?
By Bart Leahy

36
A CHANCE ENCOUNTER
What a passing comet can teach us about Mars
By Roxann Elliott

40
EARTH: ONE GRAIN IN A FIELD OF MILLET
By Lance Frazer

42
ENTERPRISE IN SPACE:
Changing Science Fiction into Science Fact
By Christopher Bryan Jones

45
CONSTRUCTING SPACE HABITATS
The NSS Roadmap to Space Settlement Student Art Contest
By Lynne F. Zielinski

46
A TALE OF TWO SPACE SETTLEMENT BILLS
By Steve Wolfe

Departments:

7
LETTER FROM THE PUBLISHER
By Pat Silver

8
NSS ANNOUNCEMENTS
Dateline Orion
By John F. Kross

10
NSS CORRESPONDENCE
NSS Looks Forward to an Exciting 2015

47
LETTER FROM THE EXECUTIVE COMMITTEE CHAIR
The Implications of 3D Printing for Space Settlements
By Mark Hopkins

48
BOOKS
2001: The Heritage and Legacy of The Space Odyssey, by Frederick I. Ordway, III and Robert Godwin
Reviewed by Ted Spitzmiller
Infinite Worlds: The People and Places of Space Exploration, by Michael Soluri
Reviewed by Robert A. Lee

50
CHAPTER LISTINGS

55
SIGNING OFF
Orion Recovery

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