Titan looms just over the thin rings, while dark ring shadows on Saturn show the Sun to be above the ring plane.
靠近中的土卫六(泰坦)正处于纤细的光环上方。而投在土星表面的光环阴影表明，太阳正位于光环平面的上方。
A never-before-seen "supersized" ring around the planet Saturn has been discovered.
一道罕见的“超大型”光环在土星周围被发现。
The best possible explanation seemed to be that something physical-a ring of debris around rhea-was blocking the ions and electrons from reaching Cassini. (see "Saturn Moon May Have rings-a First.")
最有可能的解释像是某些物质——围绕土卫五的碎片环——正阻碍离子和电子到达卡西尼。(参见《土星的卫星也许有光环——第一个》。)
Until this week Saturn's small moon Rhea was the only known solid space object thought to have a ring. (Other known ringed bodies, such as Saturn, are mainly gaseous.)
直到本周土星的小卫星土卫五还被认为是唯一具有环的立体空间物体。(其它已知有环的天体，例如土星，大部分是气态的。)
Spitzer's IR instruments can capture the heat radiation put off by dust particles in the ring, which starts some 3.7 million miles from Saturn and extends outward another 7.4 million miles.
斯皮策望远镜上的红外线设备可以俘获环尘埃发出的热辐射，这个巨大的环内侧距离土星600万公里，向外一直扩展到1800万公里处。
Pioneer photographed Saturn 's ring system from a unique position with the Sun behind the planet.
先驱者从一个得天独厚的位置上拍摄了土星的光环系统。其时，太阳正处于该行星的背后。
This diagram illustrates the extent of the largest ring around Saturn, discovered by NASA's Spitzer Space Telescope.
本插图示意了由斯皮策空间望远镜发现的土星大光环的范围。
Its particles are diffuse and may even extend beyond the bulk of the ring material all the way in to Saturn and all the way out to interplanetary space.
光环微粒是如此的弥散以致于它们从土星一直延伸到行星间空间。
The relatively small Numbers of particles in the ring wouldn't reflect much visible light, especially out at Saturn where sunlight is weak.
人数较少的粒子环，并不反映多少可见光，特别是已在土星在阳光薄弱。
This impact would have sprayed huge quantities of material into space, forming a ring around Earth similar to, but much thicker than, those that now adorn Saturn.
这次碰撞已将大量的物质散发到了太空，从而形成了环绕地球的光环，类似于那些现在装饰土星的光环，但是要厚得多。
What was once the asteroid is now just a jagged ring of dust, encircling the Earth like one of the rings of Saturn.
在曾经是小行星现在只是一个锯齿状的尘埃环，包围像土星环一个地球。
If you could see the ring, it would span the width of two full moons' worth of sky, one on either side of Saturn.
如果你可以看到环，它将跨越宽度两满月'价值的天空，一个在任何一方的土星。
If you could see the ring, it would span the width of two full moons' worth of sky, one on either side of Saturn.
如果你可以看到环，它将跨越宽度两满月'价值的天空，一个在任何一方的土星。
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