DETROIT (WWJ) –  Should folks start getting their bucket list items crossed off before December 21?  One scientist doesn’t think so.

We’ve heard about it, read about it, and watched a movie about it. The ancient Mayan calendar is believed to end on December 21, 2012 and that signifies to some that a huge cataclysm of some sort will end life as we know it. Theories range from a collision with an unknown planet, being swallowed up by a black hole, or even a shifting of the earth’s magnetic poles.

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David Morrison, a leading space scientist and director of the Carl Sagan Center, told WWJ’s Rob Sanford that it’s all bunk.

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“There are all of these stories and any scientist can look at them and see that they are fundamentally flawed,” Morrison said. “People seem to want there to be a cataclysm. Well, there isn’t going to be one.”

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Morrison said enjoy 2013.