UPDATE: October 30, 2009: This challenge has moved to a new site. All links in this post have been changed to reflect this!
Sylvia from Classical Bookworm is hosting the Astronomy 2009 Challenge. She writes:
Welcome to the International Year of Astronomy! This year is dedicated to celebrating the beauty and wonder of our universe and appreciating the benefits and knowledge that come from astronomy and space exploration. What better way for bibliophiles to participate than with a reading challenge?
Our species has always been fascinated by celestial bodies so there is no shortage of reading material for this challenge. To keep it simple I've divided astronomical literature into three categories—History & Astronomers, Cosmology & Astrophysics, and Sci-Fi—and your mission will be to read one book from each group.
Sylvia has a resource list for possible reads. The challenge is not just about reading, but includes some "field work" as well.
To read more and to sign up, visit the post about the challenge. Sylvia also has some cool badges for your blog...here is one: