Experts had not bothered to study closer-in data in detail because they believed that radiation pressure of the sun and the many flight maneuvers would make it difficult to measure the anomaly.

• 专家们不曾详尽的研究较近距离内的数据，因为他们认为太阳的辐射压与许多太空飞行任务会使异常现象不好量测。