Astronomy in Mongolia

INTERNATIONAL YEAR OF ASTRONOMY 2009



The year 2009 is the 400th year since 1609 when Galileo Galilei, an Italian scientist, opened a door to the universe for the first time using an astronomical telescope. UNESCO, or the United Nations Educational, Scientific and Cultural Organization, has designated the year 2009 as International Year of Astronomy (IYA in abbreviation), accordingly. Across the world, people will look up at the starry night sky, contemplating
the existence of the Earth and human beings living, in the universe, and discover
whatever they can. That is aim of the International Year of Astronomy. 

The Maxim for this year will be “THE UNIVERSE; YOURS TO DISCOVER” Galileo made many important discoveries in the fields of physics and astronomy. In particular, he performed significant scientific research, directing his telescope toward the starry sky and observing various astronomical objects. He built many telescopes of different magnifications. Beginning from 1609, he observed the Moon, the Sun, planets of the solar system including Venus, Jupiter and Saturn, star clusters or nebulae, the Milky Way and other phenomena, in successfully solving enigmas of the universe, one after another.
Above all, he discovered, through observation of Jupiter and Venus, the proof for the heliocentric theory that concluded that the Earth like other planets orbited around the Sun which was positioned at the center of the solar system, on idea that aroused a tremendous sensation at the time.




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