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Pluto is currently classified as a dwarf planet by the International Astronomical Union. NASA administrator Jared Isaacman has urged Donald Trump to declare Pluto a planet again. This market will resolve to "Yes" if Pluto is declared a planet by June 30, 2026, 11:59PM ET. Otherwise, this market will resolve to "No". A qualifying declaration may be made by the International Astronomical Union or by Donald Trump, but must explicitly state that Pluto's status is that of a planet. Statements reinforcing Pluto's dwarf planet status or statements indicating that its classification may be reconsidered will not be sufficient to qualify this market towards a "Yes" resolution. Statements indicating intent to reclassify Pluto as a planet will count towards this market's resolution only if they are made without qualifiers (e.g., "Pluto will be reclassified as a planet if it sufficiently clears its orbit" would not count). Executive orders declaring Pluto's status as a planet will qualify. This market's resolution source will be statements from the International Astronomical Union, Donald Trump, or any official White House legal or social media representative will qualify.
Polymarket uses a central limit order book (CLOB) model — you can buy or sell shares of any outcome at the current market price, or place limit orders at your target price. All positions are settled in USDC when the market resolves.
Markets resolve through UMA's Optimistic Oracle. After the market closes, a proposer submits a resolution, followed by a 2-hour dispute window. If no dispute is raised, the resolution is accepted. Disputed markets go to UMA token holder vote.