On This Day (May 15)

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In 1252, Pope Innocent IV issued the papal bull ad exstirpanda, authorizing the use of torture on heretics during the Medieval Inquisition.

In 1928, Mickey and Minnie Mouse made their film debut in the animated cartoon Plane Crazy.

In 2009, The European Space Agency's Herschel Space Observatory and Planck satellite (pictured) are launched from the Guiana Space Centre, using an Ariane 5ECA rocket.