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.
Uranus has an axial tilt of 97.7 degrees. (Venus is about 177 degrees, but this almost puts it upside down and vertical, thus it really only spins the wrong way but is not very tilted at all) --- for comparison, Earth has a tilt of 23.4 degrees.