Planetary Demarcations

  • Bruce Dorminey


However infrequent, however primitive, life’s first criterion is that a habitable body lie at a habitable distance from its star. No matter who’s ultimately right—Black (who believes that we only have proof of planets around pulsars), Marcy (who bets there are “full-fledged” planetary systems around half of all Sun-like stars), or DePoy (who ventures that no more than 10 percent of Sun-like stars have planetary systems resembling our own)—the mere fact of finding planets around other Sun-like stars only marks the beginning of a decades-long quest to find planets that could ultimately harbor life. And depending on the temperature and type of star, the habitable zone can vary wildly.


Planetary System Habitable Zone Planetary Scientist Southwest Research Institute Debris Disk 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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    Canup, Robin, planetary scientist, Southwest Research Institute, Boulder, Colorado. Interviewed on March 21, 2001.Google Scholar
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    Interview with Darren M. Williams, planetary scientist, Penn State, Pennsylvania.Google Scholar
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Copyright information

© Springer Science+Business Media New York 2002

Authors and Affiliations

  • Bruce Dorminey
    • 1
  1. 1.ParisFrance

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