10 FAQs about Planet-X (The Astronomy Cafe)

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  1. Over the years, how many hypothetical planets have been searched for but not found?
  2. Where is the 10th planet located?
  3. What is the name of the 10th planet in our solar system?
  4. Can you tell me about the new planet discovered between the orbits of Mars and Jupiter?
  5. Was there ever a planet between the orbits of Mars and Jupiter?
  6. How do you explain the orbits of Uranus and Neptune without invoking a 'Planet X'?
  7. Is there a planet named 'Clara' outside the orbit of Pluto?
  8. Does Planet X exist?
  9. What objects have been explored outside Pluto's orbit?
  10. Are astronomers still searching for a 10th planet?

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