Astronomy
Astronomy is the science that deals with the study of heavenly
bodies. This is one of the oldest study of science that began in early times.
Chaldeans and Babylonians were keen observers and made calendars from their
observation. The people who study these heavenly bodies are known as
astronomers. They use telescope to observe astronomical bodies and on the basis
of their observation they determine the nature of the Universe through the
principal of mathematics and physics.
Galileo Galilei
Galileo Galilei (1564-1642) built his own telescope to observe the
night sky. He was the first person to observe the surface of the Moon, Jupiter
and its Moons and rings of Saturn.
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