Instead, Dr Marcy and others like him look for changes that the wobbles cause in the wavelength of the light from the star.
相反，马西博士与像他那样的其他科研人员在尽力发现一些变化，即恒星发出光束的波长受位置移动的影响而造成的变化。
The radial velocity method, which looks for changes in a star's velocity toward or away from Earth triggered by a planet's orbit around that star.
径向速度法，即观察某颗行星环绕恒星的轨道所引起的恒星相对地球来往的速度变化。
Mostly, these are natural fluctuations, but particularly sharp and regular changes might signify a planet passing in front of a star.
大部分情况下，这些变化都是自然波动，但是一旦有急剧变化或者规律性变动，可能是行星在恒星前经过的标志。
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