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In fact, the angle between the axis of the earth and the ecliptic plane is about 23.5 degrees. If you look in the next animated image, you can see that while earth moves in an orbit around the sun in the ecliptic plane, it rotates around its own axis under that angle of 23.5 degrees all the while.
Sometimes the planets appear to change direction in the sky. This retrograde motion is entirely an illusion caused by the Earth passing the slower moving outer planets. Sometimes, the planets seem to move backwards!Typically, the planets shift slightly eastward from night to night, drifting slowly against the backdrop of stars. From time to time, however, they change direction.ometimes the planets appear to change direction in the sky. This retrograde motion is entirely an illusion caused by the Earth passing the slower moving outer planets. Sometimes, the planets seem to move backwards!