NASA scientists have debunked five Mayan apocalypse myths in an attempt to assure us the world won't be ending on the 21st, which is the end of a Mayan calendar cycle. The Mayans were completely wiped out by the Spanish Conquerors in the 1500’s, which was probably why their calendar came to sudden end. Read the 5 apocalypse scenarios that won't be happening in 3 days HERE