1 Thorium fuels can breed fissile uranium-233 to be used in various kinds of nuclear reactors. 2  Molten salt reactors are well suited to thorium fuel, as normal fuel fabrication is avoided.
Since Pluto has a much higher axial tilt of roughly 119.5 degrees, it has much larger arctic and antarctic circles, each stretching from roughly 29.5 degrees latitude to their respective poles. This means that at the peak of Plutoâs summer the area receiving the most direct sunlight is actually in the arctic circle.
Pluto is one of Sol's numerous ice dwarf worlds. It is mainly of note for being the gravitational anchor for the Mass Relay to Arcturus. Pluto and the Charon Relay (formerly encased in ice, and considered a moon) orbit each other. Pluto's orbit was circularized in 2157 as a side effect of the Charon Mass Relay recovery operations.