美国宇航局的哈勃太空望远镜近的距离观察发现，这些斑点实际上是横跨在木星表面上，很少见到的3个最大卫星(木卫1，木卫3，木卫4)的直线排列。
Closer inspection by NASA's Hubble Space Telescope reveals that these spots are actually a rare alignment of three of Jupiter's largest moons - IO, Ganymede, and Callisto - across the planet's face.
美国航天局星期二公布的第一张照片显示了木星四颗最大卫星中的三颗卫星，分别是埃欧、欧罗巴和盖尼米德。
The U. S. space agency released a picture Tuesday showing Jupiter surrounded by three of its four largest moons — Io, Europa and Ganymeade.
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