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.
Because the distance to Pluto is so great, it lies inside the Kuiper Belt, a group of rocks and ices left over from the formation of the solar system. With its rocky core and icy crust, Pluto is the largest known object in the belt. Far from the sun, bodies in the Kuiper Belt suffer freezing temperatures.