Does Planet Nine Really Exist?
In 2006, the International Astronomical Union voted to demote Pluto to a "dwarf planet," reducing the official number of planets in the solar system to eight. According to Mike Brown, the astronomer behind Pluto's declassification, there is, however, a wealth of evidence suggesting the existence of a ninth planet.
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Airs
Sun, Jan 11, 2026
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42: The Answer to Almost Everything
207 episodes
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S1 · E185
in 42: The Answer to Almost Everything
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S1 · E186
Are We An Evolutionary Superspecies?
Sun, Jan 18, 2026