Season 60 Episodes10
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Planet 9 From Outer Space
Feb 14, 2016
On January 20 2016, two American astronomers made an extraordinary claim - they had found evidence for a ninth planet in our solar system, a planet 20 times further out than Neptune which would take up to 20,000 years to orbit the sun. It is
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Episode Summary
"Planet 9 From Outer Space" is episode 1 of The Sky at Night season 60. It aired on February 14, 2016.