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Galileo's telescope : The telescope that allowed us to peer into SPACE

Man of many talents :
Italian scientist Galileo GaliLei(1564 - 1642 ) was brilliant in many ways. His father wanted him to study medicine, but he became a math professor instead, and also taught physics. He was fascinated by astronomy. When a simple telescope, called a spyglass, was invented in 1608, he challenged himself to build a better one that would let him scan the heavens.

Looking into space :
By 1609, Galileo had designrd and built a telescope that could magnify things many times more than any previous instrument.
It was powrful enough to reveal unimagined astronomical details, such as the MOUNTAINS OF THE MOON and the four largest of the
moons orbiting the planet Jupiter. Galileo even saw the rings of saturn through his telescope, although he didn't have a clue as to what these might be.

How it Changed the world ?
Galileo's invention led to the modern telescopes that have allowed us to learn so much about our place in space.