I know when spinning a gyroscope will resist change in orientation so that the rotor is still pointing in the same direction. But, is that direction with respect to earth's center of gravity or is it an "absolute direction". So, if I point a gyroscope upwards and spin the rotor and I go directly to the otherside of the earth would the rotor be pointing downwards or will it be pointing upwards still? Also, if I spun a gyroscope for a day, would I see it change direction (with respect to my reference frame) with Earth's rotation? And if I spun it for a year would I see it change direction (again with respect to my reference frame) along with Earth's rotation and orbit? Considering these questions my guess is it stays in the same direction with respect to Earth's Center of Gravity.