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We all may prefer the goldilocks zone \u2013 not too hot, not too cold. But most of the universe is bitterly cold. We can learn a lot about it if we\u2019re willing to brave a temperature drop.\nA chilly Arctic island is the closest thing to Mars-on-Earth for scientists who want to go to the Red Planet. Meanwhile, the ice sheet at the South Pole is ideal for catching neutrinos \u2013 ghostly particles that may reveal secrets about the nature of the universe.\nComet ISON is comet ice-off after its passage close to the Sun, but it\u2019s still giving us the word on solar system\u2019s earliest years.\nAlso, scientists discover the coldest spot on Earth. A champion chill, but positively balmy compared to absolute zero. Why reaching a temperature of absolute zero is impossible, although we\u2019ve gotten very, very close.\nGuests:\n\n\nFrancis Halzen \u2013 Physicist, University of Wisconsin-Madison, principal investigator of The IceCube Neutrino Observatory\n\n\nTed Scambos \u2013 Glaciologist, lead scientist, National Snow and Ice Data Center, University of Colorado\n\n\nPascal Lee \u2013 Planetary scientist, SETI Institute, director, NASA Haughton-Mars Project, and co-founder of the Mars Institute. His new book is Mission: Mars\n\n\n\nAndrew Fraknoi \u2013 Chair, astronomy department, Foothill College\n\n\nVladan Vuleti\u0107 \u2013 Physicist, Massachusetts Institute of Technology\n\nDescripci\xf3n en espa\xf1ol\nLearn more about your ad choices. Visit megaphone.fm/adchoices