Galileo Observed the Universe with Powerful Telescope

Galileo Galilei examined the night sky with a high powered telescope with sufficient resolving power for astronomical observation in Padua, Italy in 1609. He observed the moon was not smooth, but had sharp mountains, rugged craters, individual stars in the Milky Way, rings of Saturn, four moons or the Galilean satellites orbiting Jupiter, and wrote “stars in myriads which have never been seen before”. His findings were published in Siderius nuncius (The Starry Messenger).

      1609, 1610
      Galileo Galilei,
      Padua, Italy

Additional Information:

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