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  | | Galileo Galilei | | | Galileo Galilei |
  | | Today we all know what our galaxy looks like and we can count the stars. | | | Today we all know what our galaxy looks like and we can count the stars. |
  | | We must thank Galileo Galilei for this. | | | We must thank Galileo Galilei for this. |
  | | He was the one who invented the telescope. | | | He was the one who invented the telescope. |
  | | Thanks to him, we know that the Earth revolves around the sun. | | | Thanks to him, we know that the Earth revolves around the sun. |
  | | At that time, the church taught that the Earth was the center of the Universe. | | | At that time, the church taught that the Earth was the center of the Universe. |
  | | The Pope arrested Galileo. | | | The Pope arrested Galileo. |
  | | He was under house arrest for the rest of his life. | | | He was under house arrest for the rest of his life. |
  | | While he was under house arrest, he kept writing on physics and astronomy. | | | While he was under house arrest, he kept writing on physics and astronomy. |
  | | Scientists call Galileo the father of modern physics. | | | Scientists call Galileo the father of modern physics. |
  | | He was also an astronomer. | | | He was also an astronomer. |
  | | He discovered the four largest moons of Jupiter. | | | He discovered the four largest moons of Jupiter. |
  | | Those moons are called "the Galilean moons" in his honor. | | | Those moons are called "the Galilean moons" in his honor. |
  | | Galileo Galilei died in 1642 at the age of 77. | | | Galileo Galilei died in 1642 at the age of 77. |