NASA is undertaking a “doomsday” exercise this week in preparation for the end of the world.

The purpose of the rehearsal, which began yesterday, is to ascertain what would happen in the event an asteroid does in fact hit the Earth and how survivors would react to a potential apocalypse as a result.

The drill has been named the Hypothetical Asteroid Impact Scenario and considers all possibilities of the event ranging from when the make-believe asteroid was initially discovered, its hypothetical orbit size, as well as potential hit zones across the world.