What features did Galileo document appearing and moving across the Sun’s face using telescopes with specialized filters?
Answer
Sunspots
Galileo documented dark patches that appeared and moved across the Sun’s face, which he identified as sunspots.
Related Questions
What core Aristotelian dogma about celestial bodies did Galileo challenge by observing the Sun?What features did Galileo document appearing and moving across the Sun’s face using telescopes with specialized filters?What competing theory regarding the dark patches on the Sun did Galileo’s initial observations help disprove?What was the title of Galileo's work detailing his systematic study of sunspots?By charting the path of sunspots, what major motion of the Sun did Galileo definitively prove?Approximately what was Galileo's established estimate for the Sun’s rotational period?What observation, independent of sunspots, provided data that only made sense if Venus orbited the Sun, not the Earth?What specific tool did Galileo utilize when observing the Sun to protect his eyesight?In what year did Galileo publish the documentation confirming his findings about sunspots?Galileo's observation that the Sun rotated provided a parallel to Earth's motion, reinforcing which cosmological system?Galileo’s publication regarding sunspots served as a direct challenge to the viewpoints of whom?