I started out listening to Slacker Astronomy, an excellent podcast which gives an entertaining presentation of some of the latest news and events in astronomy. When one of the main characters, Dr. Pamela Gay moved on, however, I had a tough decision to make with my limited podcast listening time.
I ended up subscribing to Astronomy Cast because it mixes in the fundamental concepts of astronomy with some of the latest developments and still maintains a light attitude that makes it an enjoyable listen.
Astronomy Cast is a good place to start if you are new to the topic. Over time, as I learn more from Astronomy Cast, I may “graduate” back to Slacker Astronomy for more up to the minute news.
Then again, maybe I should drop one of my other podcasts so I can listen to both of these. . .
P.S. The most recent (as of this writing) episode of Astronomy Cast The Moon: Part 2 was full of information about the exploration of our nearest celestial neighbor. My favorite link was to the recent Selene mission conducted by JAXA, the Japanese space program. They have a lot of high-definition photos which make great desktop backgrounds for your computer!