The circle of illumination does not coincide with the Earth's axis because it is determined by the position of the Sun relative to the Earth. As the Earth rotates on its tilted axis, only half of the planet is illuminated by sunlight at any given time, creating the circle of illumination that divides the day side from the night side. The tilt of the Earth's axis (approximately 23.5 degrees) also affects the angle and extent of sunlight received, further separating the circle of illumination from the axis itself.
Mercury
rotationis one complete spin on earths axis!!!
23.45 degrees
Earths rotation around its axis
The northern end of Earths axis is the North pole.
there are 4 axis of symmetry in a circle
intersect
Any point on the graph can be the center of a circle. If the center is on the x-axis, then the circle is symmetric with respect to the x-axis.
1. Tilt of earths axis 2. Earths axis remains parallel throughout its yearly orbit.
During an equinox, neither the North nor the South end of Earth's axis is tilted away from the Sun. This is because during an equinox, the tilt of Earth's axis is perpendicular to the Sun's rays, causing equal illumination of both the Northern and Southern Hemispheres.
About 8,000 miles.
orbit of the moon
the axis
23.5 degrees.
The earths tilt at its axis
north pole
Mercury