Ad Astra Volume 27 Number 1 Spring 2015

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Ad Astra 2015 Spring (Volume 28 Number 1)

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.

  • 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

Ad Astra 2015 Spring (Volume 28 Number 1)

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.

  • 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