He pointed out that the shape of sunspots weren't circular.

他指出，太阳黑子不是圆形的。

youdao

The fact that sunspots are magnetic fields accounts for their dark appearance.

太阳黑子是磁场的事实解释了它们的黑色外观。

youdao

Astronomers did eventually figure out what sunspots had to do with magnetic fields.

天文学家最终确实发现了太阳黑子与磁场的关系。

youdao

So the team finds planets and sunspots by the light produced by the star.

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Solar output typically goes through 11-year cycles, with high numbers of sunspots seen at their peak.

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Moreover, there is (controversial) evidence of a long-term weakening trend in the magnetic field strength of sunspots.

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