What imperfect features did Galileo document on the Sun, challenging its status as a pristine celestial body?

Answer

Sunspots

Galileo observed dark blemishes, known as sunspots, on the Sun's surface, proving that this celestial body was not pristine or immutable.

What imperfect features did Galileo document on the Sun, challenging its status as a pristine celestial body?

#Videos

Galileo's Revolutionary Observation - YouTube

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