It is a very small, spinning star. An enormous volcano on Mars and the largest known volcano in our Solar System. If it was on Earth, it would be wider than the state of Arizona and higher than our Mount Everest. It is the path of an object as it revolves around another, usually larger, object. The Earth revolves around the sun, the moon revolves around the Earth.
Orbits can be circular, elliptical or irregular.
It is the point at which the Moon is closest to the Earth in its monthly orbit. Phobos One of two moons that orbit Mars. Pluto Our 9th planet. Named for the Roman god of the Underworld, it was discovered in 1930 by Clyde Tombaugh. So, over a period of time the North Pole starts to point to a different star.