Will planet 9 be discovered before 2030?
Prediction market on manifold. Planet 9 is a hypothetical gravitational object in the outer solar system, that would explain the orbits of some trans neptunian objects. https://en.wikipedia.org/wiki/Planet_Nine If any object with mass is discovered that explains these orbits before midnight US/Eastern time on 1/1/2030, this question will resolve YES.
Liquidity: $150. Resolves: 1/2/2030.