Thanks to Doug Chaplin over at MetaCatholic for making me aware of this.
Here is the description of this Advent calendar from the site:
As we head into the traditional western Holiday Season, I’d like to present this Hubble Space Telescope imagery Advent Calendar. Every day, for the next 25 days, a new photo will be revealed here from the amazing Hubble Space Telescope. As I take this chance to share these images of our amazing Universe with you, I wish for a Happy Holiday to all those who will celebrate, and for Peace on Earth to everyone. – Alan (25 photos total – eventually)
I hope this helps you give “glory to God in the highest” during this season of Advent.