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b'Will your calendar entry for November 19th\\xa0be your last? Some people say yes, predicting a catastrophic collision between Earth and planet Nibiru on that date and the end of the world.\\xa0But it won\\u2019t happen, because this hypothesized rogue world doesn\\u2019t exist. Nibiru\\u2019s malevolent disruptions have been foretold many times, most dramatically in 2012 and three times so far in 2017.\\xa0But this year NASA issued a rare public assurance that doomsday was not in the offing.\\nFind out why the agency decided to speak out. Meanwhile, hoaxes and alarmist stories from the 19th\\xa0century demonstrate that we have a long history of being susceptible to hooey.\\xa0\\nAlso, an astronomer who doesn\\u2019t believe that Nibiru is hiding in the outer Solar System, but that Planet X is.\\xa0\\xa0\\nGuests:\\n\\n\\n David Morrison\\xa0\\u2013\\xa0Astronomer and space scientist, NASA Ames Research Center\\n\\n\\nRobert E. Bartholomew\\xa0\\u2013\\xa0Medical sociologist at Botany College, Auckland, New Zealand, and author of \\u201cA Colorful History of Popular Delusions\\u201d\\n\\n\\nMichael Brown\\xa0\\u2013\\xa0Astronomer at the California Institute of Technology\\n\\n\\nLearn more about your ad choices. Visit megaphone.fm/adchoices'