“ Au contraire. The neutrons are what make the reactor possible, as they breed tritium in the lithium blanket and dump their energy in it. The liquid... (read full comment) ” 

Posted on January 12, 2012 at 4:17 AM EST

“ Habitable vs Earth-Like Hi arXiv-blog Traub's paper is very interesting, but the nature of most of the planets in the selected "Habitable Zone"... (read full comment) ” 

Posted on September 27, 2011 at 9:45 AM EDT

+ 1 more comment posted in this discussion

“ Solar-sails can only go against the light-flow when there's another force involved - for example, the Sun's gravity. Thus a solar-sail can decrease... (read full comment) ” 

Posted on January 12, 2011 at 10:39 PM EST

“ You'll have to show us how that works ZephirX. Please elucidate us! (read full comment) ” 

Posted on November 18, 2010 at 2:59 PM EST

+ 1 more comment posted in this discussion

“ Tritium is a wasted effort "Project Daedalus" didn't propose using tritium as a 3He source - Bob Parkinson ruled that out in his study of the... (read full comment) ” 

Posted on May 26, 2010 at 9:36 AM EDT

+ 1 more comment posted in this discussion

“ Electrical fields and God Makes one wonder about the association between electric fields, which congregate around high points in a landscape, and... (read full comment) ” 

Posted on May 11, 2010 at 9:21 AM EDT

“ Huh? Gravity as entropy creation. Cool idea. Makes sense of black holes too, directly. But those other comments before me... huh? What information... (read full comment) ” 

Posted on March 26, 2010 at 5:16 PM EDT

“ Ummm... typo? Hi The distances you quote as distance limits don't appear anywhere in the paper. In fact you seem out by quite big factors. (read full comment) ” 

Posted on April 14, 2009 at 10:10 AM EDT

“ Soul or machine... false dichotomy Worrying about whether the 'soul' exists or not is self-defeating. The ancient view was that the 'soul' was... (read full comment) ” 

Posted on February 23, 2007 at 8:13 PM EST