What was the dual impact of Galileo's discovery concerning sunspots?
Answer
It showed the Sun was not a perfect sphere and that the Sun itself was rotating on its axis.
The dark markings (sunspots) proved the Sun was blemished, contradicting the ancient view of perfect celestial spheres. Tracking these spots led Galileo to conclude that the Sun was a dynamic body rotating on its axis.
Related Questions
What key observation was missing that prevented Galileo from fully proving the Earth's motion using contemporary standards?In what year did Galileo significantly improve his telescope and begin systematically using it to gather astronomical data?Which of Galileo's discoveries delivered a direct, physical blow to the geocentric dogma that everything orbited the Earth?What aspect of Venus's appearance, observed through the telescope, proved it must orbit the Sun?What was the dual impact of Galileo's discovery concerning sunspots?What system, besides Copernicus's, was considered a viable explanation for the known observations at the time Galileo made his discoveries?In what year did the Inquisition formally declare the proposition of a moving Earth to be 'erroneous in faith'?What was the primary theological basis for rejecting the moving Earth proposition?What was the significant political error Galileo made in his 1632 publication?How was Copernicus generally treating his heliocentric model decades before Galileo publicized his physical evidence?What was the ultimate sentence Galileo received in 1633 after being found 'vehemently suspect of heresy'?