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.
All planets have tilted axes. But the axis of Uranus is tilted almost by 90 degrees with the plane of its orbit making it look like it is rotating vertically. See related link for a pictorial representation. All planets have tilted axes. But the axis of Uranus is tilted almost by 90 degrees with the plane of its orbit making it look like it is rotating vertically.