http://www.blogtalkradio.com/fastforwardradio/2010/10/07/fastforward-radio--strange-new-worlds
Phil Bowermaster and Stephen Gordon discuss the implications of the discovery of the first potentially habitable planet outside the solar system. What does the existence of Gliese 581g imply about the existence of more such worlds? What does it tell us about the potential for life elsewhere in the galaxy.
If we’re ever to travel to a planet such as 581g, how will we get there? And what will motivate us to go?