现有理论指出：行星是恒星诞生之后的残留物——碟状尘埃和气体的产物。

Current theory holds that planets are made from disks of gas and dust left over after star birth.

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中间是明亮的星云，一个极薄的碟状物，从我们这个非常的视点看着像一条直线。

The bright nucleus can be seen at the centre, along with the very thin disc that looks like a straight line from our unusual viewing position.

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卫星的快速转动足以将它们压成一个光滑的椭圆，但是这并不能解释它们碟状中心边缘的情况。

While the moons' rapid rotation would be enough to squash them into a smooth oval it can't explain the rim around the centre of the saucer shape.

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