Ad Astra Volume 25 Number 4 Winter 2013

Cover Image: Now that ISS has demonstrated the technology, engineering, and operations for living and working in Earth orbital space, the next step for NASA could be establishing a city in space, assembled from modular components, to serve multiple uses. IMAGE CREDIT: Joshua Sams, Analytical Mechanics Associates (AMA), Inc., under contract to NASA Langley Research Center.

• 12
  DISTANT SKYLINE:
  A Vision for What’s Beyond ISS
  By Doris Hamill
• 16
  CHOOSING FOR SCIENCE:
  The Farside of the Moon
  by Marianne Dyson
• 20
  A MODULAR PARADIGM FOR EXPLORATION
  By James E. Van Laak
• 24
  IN ONE GIANT LEAP
  Shackleton Energy Company’s Strategic Vision
  By Clifford R. McMurray
• 28
  COMMERCIAL CARGO COMPETITION
  Dragon turns up the heat; Cygnus trumpets test flight
  By John F. Kross
• 32
  A BOLD NEW MISSION:
  Asteroid redirect with crew sample return
  By Marianne Dyson
• 36
  A SUMMER IN NEW SPACE, 2013
  By Dale L. Skran
• 40
  CLOSER EVERY DAY:
  An interview with George Whitesides
  By Clifford R. McMurray
• 42
  NATIONAL SPACE SOCIETY AWARDS
  Honorees at the 2013 NSS International Space Development Conference
  By John K. Strickland
• 44
  UN COMMITTEE ON THE PEACEFUL USES OF OUTER SPACE 2013
  by Dr. Amanda L. Moore