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Claims about new planets that turned out to be wrong – and why 'Planet Nine' may be different
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The potential science and engineering value of samples delivered to Earth by Mars sample return - Beaty - 2019 - Meteoritics & Planetary Science - Wiley Online Library
Claims about new planets that turned out to be wrong – and why 'Planet Nine' may be different
Dr. Robert S. Harrington - Planet X Nibiru | Harrington, Planets, Mars and earth
IDEAS AND TRENDS; CLUES GET WARM IN THE SEARCH FOR PLANET X - The New York Times
Pat Harrington, Schneider on 'One Day at a Time,' dead | CNN
Why is Pluto not a planet? | BBC Sky at Night Magazine
Knowledge Apocalypse 2012 Edition: Ancient Aliens, Planet X & The Lost Cycle Of Time: Martell, Jason: 9781469953953: Amazon.com: Books
An ancient stellar flyby could have put Planet Nine into its distant orbit | Astronomy.com
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Nibiru and Planet X | Answers in Genesis
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Robert Harrington | The Planetary Society
