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.
The Earth rotates around its axis once every 24 hours. It also revolves around the Sun once every 365.25 days. The axis of Earth's rotation is tilted 23.5 degrees from the plane formed by its orbit around the Sun.Figure 1 shows the axial tilt of Earth, with respect to its orbit.Figure 1. Earth's axial tilt.The angle of tilt equals the angle between the axis of rotation (through the poles) and a line that is perpendicular to the plane of the orbit.igure 1 shows the axial tilt of Earth, with respect to its orbit. Figure 1. Earth's axial tilt. The angle of tilt equals the angle between the axis of rotation (through the poles) and a line that is perpendicular to the plane of the orbit.