NOVELTY - A terrestrial solar tracking photovoltaic array (100) comprises: an elongated torque tube (120); two or more sets of solar cell modules (200) connected to the torque tube; and a drive (170) to rotate the torque tube about a longitudinal axis of the torque tube to move each of the sets of solar cell modules to track the sun during the course of a day.    USE - The terrestrial solar tracking photovoltaic array and method are useful for tracking the sun (all claimed).    ADVANTAGE - The terrestrial solar tracking photovoltaic array may include a modular design that is sized and weighted to facilitate installation with a small amount of manpower.    DETAILED DESCRIPTION - A terrestrial solar tracking photovoltaic array (100) comprises: an elongated torque tube (120); two or more sets of solar cell modules (200) connected to the torque tube and being aligned in different planes that are angularly offset relative to one another; a drive (170) to rotate the torque tube about a longitudinal axis of the torque tube to move each of the sets of solar cell modules to track the sun during the course of a day; each of the sets of solar cell modules being spaced different distances away from the drive with the angular offsets between the sets being a function of the distance away from the drive to compensate for differences in twisting distortion of the torque tube along the length of the torque tube when the drive rotates the torque tube; each of the sets of solar cell modules being substantially aligned in a common plane after a predetermined amount of rotation of the torque tube. An INDEPENDENT CLAIM is a method of tracking the sun with the terrestrial solar tracking photovoltaic array comprising: applying a rotational force to the torque tube that includes the set of solar cell modules spaced apart along the torque tube and oriented in different planes when the torque tube is in an initial rotational angular position; rotating the torque tube and tracking the sun with the set of solar cell modules; distorting the torque tube while applying the rotational force and rotating the torque tube; rotating the torque tube to a predetermined rotational angular position with each of the set of solar cell modules moving through a different angular sweep range as the torque tube rotates from the initial rotational angular position to the predetermined rotational angular position; and aligning the set of solar cell modules in a single plane at the predetermined rotational angular position.    DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of the terrestrial solar tracking photovoltaic array.    Array/element (100)    Elongated torque tube (120)    Sections (121)    Spaced-apart vertical supports (130)    Drive (170)    Modules (200)    Surface (300)