In what year did Galileo first use an optical telescope to study the moon?

Correct answer: B. 1609

  • A. 1492
  • B. 1609
  • C. 1212
  • D. 1743Exploring Educational Science Kits

Explanation

Galileo began using an improved optical telescope for astronomical observations in 1609, including observations of the Moon. The unrelated text after option d is a scraping error.

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