Illustration: Planet and moon cross in front of star.

插图：地球和月球在恒星前方交叉。

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The new planetary system, the first in which both planets can be seen crossing in front of their star, may also contain an Earth-sized companion.

这个新发现的行星系统，第一两颗行星会在恒星前交叉经过，第二该系统都可能包含有地球大小的行星。

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And fourth, it was found in exactly the way the hunt for Vulcan proceeded-by noting the slight dip in light from its parent star caused when it passed in front of that star.

第四，发现它的方法正和当年寻找火神星时依据的原理一样——即当行星在其围绕的恒星前穿过时，恒星的光线略有折射。这点被捕捉到了。

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