One hundred thirty three cardinals will gather again on Thursday under the vaulted ceilings of the Sistine Chapel, which are decorated with Michelangelo's frescoes, including "The Creation of Adam," where they'll cast their second set of ballots to make one among them the next leader of the Catholic Church's more than 1 billion members worldwide.

Black smoke was seen over the Vatican on Wednesday, May 7, indicating no decision had been reached yet in the election for a new pope.