Time once more for one of my favorite holiday traditions: the 2012 Hubble Space Telescope Advent Calendar. Every day until Tuesday, December 25, this page will present one new image of our universe from NASA's Hubble telescope. Be sure to bookmark this calendar and come back every day until the 25th, or follow on Twitter (@in_focus), Google+, Facebook, or Tumblr for daily updates. I hope you enjoy these amazing and awe-inspiring images and the efforts of the science teams who have brought them to Earth. I also must say how fortunate I feel to have been able to share photo stories with you all year, and I wish a Merry Christmas to those who celebrate it, and peace on Earth to all. (Also, choosing the "1280px" viewing option below, if you can support it, will be a good option.)