Summary: <p>We all may prefer the goldilocks zone – not too hot, not too cold. But most of the universe is bitterly cold. We can learn a lot about it if we’re willing to brave a temperature drop.</p> <p>A 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 – ghostly particles that may reveal secrets about the nature of the universe.</p> <p>Comet <span class="caps">ISON</span> is comet ice-off after its passage close to the Sun, but it’s still giving us the word on solar system’s earliest years.</p> <p>Also, 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’ve gotten very, very close.</p> <h2>Guests:</h2> <ul> <li> <strong><a href="http://icecube.wisc.edu/~halzen/">Francis Halzen</a></strong> – Physicist, University of Wisconsin-Madison, principal investigator of The IceCube Neutrino Observatory</li> <li> <strong><a href="http://nsidc.org/research/bios/scambos.html">Ted Scambos</a></strong> – Glaciologist, lead scientist, National Snow and Ice Data Center, University of Colorado</li> <li> <strong><a href="http://www.seti.org/users/pascal-lee">Pascal Lee</a></strong> – Planetary scientist, <span class="caps">SETI</span> Institute, director, <span class="caps">NASA</span> Haughton-Mars Project, and co-founder of the Mars Institute. His new book is <i><a href="http://www.amazon.com/gp/product/0545565324/ref=as_li_tf_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=0545565324&linkCode=as2&tag=arweal-20">Mission: Mars</a><img src="http://ir-na.amazon-adsystem.com/e/ir?t=arweal-20&l=as2&o=1&a=0545565324" width="1" height="1" border="0" alt="" style=""></i> </li> <li> <strong><a href="http://www.foothill.edu/ast/fraknoi.php">Andrew Fraknoi</a></strong> – Chair, astronomy department, Foothill College</li> <li> <strong><a href="http://web.mit.edu/physics/people/faculty/vuletic_vladan.html">Vladan Vuletić</a></strong> – Physicist, Massachusetts Institute of Technology</li> </ul><p><strong><a href="http://www.seti.cl/programa-de-radio-del-instituto-seti-algunos-prefieren-el-frio/">Descripción en español</a></strong></p>
