这样大小的卫星可以自己首先形成，然后被一个更大体积的行星的引力所捕获成为它的卫星。
Such large moons could form on their own and later be captured by a more massive planet's gravity to become a satellite.
该数据模型可比较的简单性有助于对GPS设备和卫星成像捕获的数据进行建模。
The data model's comparable simplicity lends itself to modeling data acquired by GPS devices and satellite imaging.
如果听起来有点荒谬的话，你就会看到下面卫星捕获的GeoEye和一个有50米(1.65英尺)的图像。
If that sounds preposterous, wait until you see it from space. The image below was captured by a GeoEye satellite and has a resolution of half a meter (1.65 feet).
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