Is Gliese 581d habitable? Maybe May 17, 2011 at 6:22 pm Robert Zimmerman Points of Information Is the extrasolar planet Gliese 581d habitable? Maybe. Leave a comment alien, alien life, astrobiology, astronomy, biology, exoplanet, extraterrestrial, Gliese 581d, Gliese 581g, habitable zone, science
