A lot of other phenomena could masquerade as planets, like starspots, or pulsating stars, or background stars messing up the measurements.
许多其他的天文现象也可能伪装成行星，比如恒星黑子，或脉动的恒星，或隐藏恒星扰乱了测量。
starspot
/'stɑ:spɔt/
英汉-汉英词典
恒星黑子
词组 | 习惯用语
您要查找的是不是：
- intercept vt. 拦截, 截住, 截击
- starship n. 星际飞船
- waterspout n. 海上龙卷风,排水管,排水槽,排水口
- polestar n. 北极星；指导原则
网络短语:
starspot 星斑; 恒星黑子;
starspot model 恒星黑子模型
原声例句
Crash Course 天文篇
中文百科
星斑
星斑相当于出现在其他恒星上的太阳黑子。太阳黑子因为很小而难以测量其对光度变化的影响，但观测到的星斑远比在太阳上的巨大，可以占据30%观测到的恒星表面，这相当于太阳黑子的100倍以上。
英语百科
Starspot 星斑
Starspots are the equivalent of sunspots located on other stars. Spots the size of sunspots are very hard to detect on other stars because they are too small to cause detectable fluctuations in brightness. Observed starspots are in general much larger than those on the Sun: up to about 30% of the stellar surface may be covered, corresponding to starspots 100 times larger than those on the Sun.
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