Resolution criteria:

This market will resolve to "Yes" if the hypothetical Planet Nine is officially named "Hades" upon its confirmed discovery. The official naming must be recognized by the International Astronomical Union (IAU) or an equivalent authoritative body. If Planet Nine is discovered and given a different name, or if it remains undiscovered by the market's closing date, the market will resolve to "No."

Background:

Planet Nine is a theoretical ninth planet in the outer Solar System, proposed to explain the unusual clustering of certain trans-Neptunian objects' orbits. Its existence remains unconfirmed, and no official name has been assigned. In 1902, astronomer Theodor Grigull suggested the name "Hades" for a hypothetical planet beyond Neptune, placing it at 50 AU with a 360-year period.

The IAU is responsible for naming celestial bodies, typically selecting names from mythology. For instance, Pluto, discovered in 1930, was named after the Roman god of the underworld, equivalent to the Greek god Hades. Given that Pluto already bears the name of the Roman counterpart to Hades, it is unlikely that the IAU would assign the name "Hades" to another celestial body.

Resolution criteria:

This market will resolve to "Yes" if the hypothetical Planet Nine is officially named "Hades" upon its confirmed discovery. The official naming must be recognized by the International Astronomical Union (IAU) or an equivalent authoritative body. If Planet Nine is discovered and given a different name, or if it remains undiscovered by the market's closing date, the market will resolve to "No."

Background:

Planet Nine is a theoretical ninth planet in the outer Solar System, proposed to explain the unusual clustering of certain trans-Neptunian objects' orbits. Its existence remains unconfirmed, and no official name has been assigned.

The IAU is responsible for naming celestial bodies, typically selecting names from mythology. For instance, Pluto, discovered in 1930, was named after the Roman god of the underworld, equivalent to the Greek god Hades. Given that Pluto already bears the name of the Roman counterpart to Hades, it is unlikely that the IAU would assign the name "Hades" to another celestial body.