Click here to see an example of a secure and flexible seat in trot. Watch closely as the rider's hips, pelvis, and legs flex freely with the horse's movement. Horse's willingly raise their back up under a seat like this, probably because it feels a bit like getting a gentle back rub with each step.
The celestial sphere is divided by the celestial equator. In astronomy and navigation, the celestial sphere is an imaginary sphere (ball) of a very large unspecified size. The sphere is concentric with the Earth. This means that the celestial sphere and the earth have the same centre. They also rotate upon the same axis.
A) The celestial sphere is just another name for our universe. B) From any location on Earth, we can see only half the celestial sphere at any one time. C) When we look in the sky, the stars all appear to be located on the celestial sphere. D) The earth is placed at the center of the celestial sphere. E) The celestial sphere does not exist physically. 2) Which of the following statements about the celestial equator is true at all latitudes? A) It extends from your horizon due east, through your zenith, to your horizon due west. B) It lies along the band of light we call the Milky Way. C) It cuts the dome of your sky exactly in half. D) It represents an extension of the earth's equator onto the celestial sphere.