Explain how the telescopic discoveries of Galileo could be used ...

[krzymel]

Explain how the telescopic discoveries of Galileo could be used in support of Copernicus.
 
  What will be an ideal response?

Question 2

Hubble divided the spirals into normal and ________ categories.
 
  Fill in the blank(s) with correct word

[IRincones]

Answer to Question 1

He found spots on the Sun, which moved across its face as the Sun spins; if the Sun could rotate on its axis, so could the Earth. He found craters and mare on the Moon, imperfect against the perception of heavenly perfection described by the Greeks. He noted that Venus showed an entire cycle of phases as it revolved completely around the Sun, not confined to Ptolemy's epicycles always between us and the Sun. He found four moons around Jupiter, moving fastest when closest, and slower farther out in their orbits; this was a model of the Copernicus solar system. He resolved the Milky Way into many faint, distant stars, showing the Celestial Sphere of the Greeks was much vaster than Ptolemy had envisioned.

Answer to Question 2

barred

[krzymel]

Thank you!

[IRincones]

Always glad to help...