The Astroprof has a pair of posts up with an excellent discussion about what defines a ‘planet’. Read Defining Planets (Part I) and Defining Planets (Part II).
Marc Miles links here, so I’m returning the favor in my public Bloglines feed. Thanks Marc!
I’ve added Nicole, “The Noisy Astronomer” to my Blogroll.
Since I’m keeping my blogroll in Bloglines now, I’ll be making announcements here every time I add a new one.