According to the scientists, some of the dark and dusty material from the outer ring moves inward toward Iapetus, slamming the icy moon like bugs on a windshield.

• 据科学家们，一些黑暗物质和灰尘从外圈向内移动对土卫八，砰冰冷的月亮一样挡风玻璃上的缺陷。