Simply put, a conclave is the assembly of cardinals that elects a pope. The word itself comes from the Latin "com" and "clavis," meaning "together" and "key," respectively – highlighting the absolute, behind-closed-doors secrecy with which the cardinals conduct their discussions and balloting.

The death of Pope Francis means a papal conclave will be held to select a successor, but besides who wins, the public will most likely not know how many votes the successor received, nor would they know much about what happened during the conclave.

As Vatican officials prepare to lay Pope Francis to rest Saturday at St. Peter's Basilica, members of the College of Cardinals are likely looking ahead to the possibly lengthy process to choose his successor.