It's a straightforward animation that shows planets and asteroids orbiting the sun, with waves of twinkles as discoveries are made.
这是个简单明了的动画显示了行星和小行星绕太阳运转，伴随着所发现的电波和星光闪烁。
These wandering stars, we now know, are the other planets orbiting the sun.
我们现在知道，这些漂移的行星是其他围绕太阳运行的行星。
Planets orbiting stars beyond the sun are labelled merely with the name of the star and a suffix letter.
属于太阳以外恒星的行星们仅仅能得到该恒星的名称，外加一个后缀字母。
Practical problems limit the ability of astronomers to determine the mass of asteroids, which are small planetary bodies orbiting the Sun.
现实操作问题限制了天文学家测定大量的小行星的能力，它们都是些围绕太阳转的行星天体。
Practical problems limit the ability of astronomers to determine the mass of asteroids, which are small planetary bodies orbiting the Sun.
现实操作问题限制了天文学家测定大量的小行星的能力，它们都是些围绕太阳转的行星天体。
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