Catholic News Service PHOTO
  A crescent moon is seen over St. Peter's Basilica at the Vatican Feb. 12. Pope Benedict XVI surprised the world Feb. 11 by announcing that he no longer has strength to exercise his ministry and will retire at the end of the month. (CNS/Paul Haring)
 
  A crescent moon is seen over St. Peter's Basilica at the Vatican Feb. 12. Pope Benedict XVI surprised the world Feb. 11 by announcing that he no longer has strength to exercise his ministry and will retire at the end of the month. (CNS/Paul Haring)