space advent calendars

i'm not sure why creating advent calendars has become a fad this holiday season, but i'm not complaining because the imagery is beautiful! so here are several links to help you enjoy your december!

•  zooniverse advent calendar brought to you by the creative folks behind the galaxy zoo.

• hubble space telescope advent calendar - from the always great photo blog the big picture

• solar system advent calendar created by emily lakdawalla at the planetary society blog

• science in school - in lieu of a visual calendar, you can sign up to receive an email for each day of advent that includes inspiring teaching ideas about science! science games, experiments, facts, websites or beautiful pictures!

have you seen any others around?