Which limitation arose when early astronomers estimated planetary positions using epicycles?

💡 Explanation

Early astronomers found the need to correct the epicycle model because the observed *irregularity of retrograde motion varied in speed*, rather than being consistent with purely circular motion. This required continuous model adjustments, because inherent geometric approximation introduced errors and therefore limited long-term accuracy.

• Which outcome during a Roman siege increased owing to unprepared masonry?
• Which error increases when using an 18th-century sextant on a rolling ship far from shore at night?
• Which outcome results when the geared astrolabe uses inaccurate angle representation in algebraic calculations?
• Which outcome occurred when terraced agricultural systems lacked proper maintenance?
• Which navigational hazard increased given atmospheric refraction disrupted sextant readings at dawn for 18th-century ships?
• Which structural risk increases when medieval castle walls are built excessively tall and thin?