• It’s Habitable Forming

    There’s evidence for a subsurface lake on Mars, and scientists are excitedly using the “h” word.  Could the Red Planet be habitable, not billions of years ago, but today?  While we wait – impatiently – for a confirmation of this result, we review the recipe for habitable alien worlds. For example, the moon Titan has liquid lakes on its surface.  Could they be filled with Titanites?

    Dive into a possible briny, underground lake on Mars … protect yourself from the methane-drenched rain on a moon of Saturn … and cheer on the missed-it-by-that-much planets, asteroids Ceres and Vesta.

    Also, do tens of billions of potentially habitable extrasolar planets mean that Earth is not unique?


    • Nathalie Cabrol – Planetary scientist, Director of the Carl Sagan Center for the Study of Life in the Universe at the SETI Institute
    • Jack Holt – Geophysicist, Lunar and Planetary Laboratory, University of Arizona
    • Jani Radebaugh – Planetary scientist and professor of geology, Brigham Young University
    • Marc Rayman –  Mission Director and Chief Engineer of NASA’s Dawn Mission
    • Phil Plait – Astronomer, blogger, and widely known as the Bad Astronomer
  • Your Audio Sky Tour: February 2008

    Use this easy-to-follow guide to enjoy what’s up in the February sky: Venus and Jupiter dancing in the dawn, Mars riding high among winter’s evening stars, and a total lunar eclipse. Host: Kelly Beatty. (5MB MP3 download: running time: 5m21s)

  • Your Audio Sky Tour: December 2007

    Download this podcast to guide you to the wonders of December’s evening sky : like Orion leaping up over the eastern horizon with gleaming Mars by his side. Host: Kelly Beatty. (7MB MP3 download: running time: 7m20s)

  • Your Audio Sky Tour: June 2008

    This month you have a chance to see three or four bright planets in the sky. June download this podcast and listen! Host: Kelly Beatty. (5MB MP3 download: running time: 5m15s)

  • Your Audio Sky Tour: April 2008

    Here is an introduction to the wonders of January evening sky : Orion’s last stand, Saturn and Mars, and plenty of springtime carnivores. Host: Kelly Beatty. (5MB MP3 download: running time: 5m46s)

  • Your Audio Sky Tour: May 2008

    Here’s an introduction to the wonders of May evening sky, which features appearances by Saturn, Mars, and the elusive planet Mercury. Host: Kelly Beatty. (6MB MP3 download: running time: 6m17s)

  • Your Audio Sky Tour: March 2008

    Download this podcast to your MP3 player, and you’ll be able to navigate the March evening sky like a seasoned stargazer. Find Mars, Saturn, Orion, the Twins of Gemini, and more. (6MB MP3 download: running time: 6m10s)

  • Finding Comet Holmes

    Finding Comet Holmes and other great sky sights is a snap if you download this podcast to your MP3 player and head outdoors after dark.