Doomsday Questions Answered by NASA Scientist

David Morrison's inbox is overflowing with public concerns about the apocalypse.
1:58 | 11/28/12

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Transcript for Doomsday Questions Answered by NASA Scientist
David Morse and has a big job -- belong here at about ten years ago to answer the questions the public fans and some of the most pivotal scientific questions of our time -- answer questions about. Astronomy and planets and life in the universe. And that went along fine until about four years ago when suddenly. I start getting these questions about the end of the world. Doomsday some -- ancient Mayan calendar predicts the end of days on December 21 -- -- twelfth. And Morrison's inbox is overflowing one fact that -- was simply. My best friend is my little dog. Please tell me when -- -- -- -- asleep so he won't suffer in the apocalypse. What was your emotional reaction to that -- letters. I'm disturbed by letters from kids who -- -- I think that is the worst part. Of this -- and it is a hoax a hoax he says with tens of millions of views on -- one predicts a planet crashing into the earth for there were affected not to be the brightest thing in -- -- After the -- -- anybody could see it Morse and has posted his own YouTube videos planet X does not exist and does not threaten air but the letters keep coming I have received letters from young people who say they are contemplating suicide. I received a few from from others who say their plan to kill her children themselves he answers all of them but it takes a told. And when he wakes up on December 22. Morrison's says he'll hand over the job of answering questions to somebody else I've become sort of obsessed. We're doomsday -- well I'd be glad to drop. Now -- -- is a scientist not a historian but he's done some reading and says the same ancient mayans who created that calendar. Also prophesied some events to take place three to 500 years from now -- Even they didn't think the world was coming to an -- At NASA Ames Research Center Jonathan -- ABC news.

This transcript has been automatically generated and may not be 100% accurate.

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