Celestial Coordinate Systems

By Arc Educators Astronomy is about observing celestial bodies, studying their characteristics, movements and modifications with time. While studying this, just pointing towards the specific object does not work as both the sky and the Earth keeps moving. To determine sky positions of heavenly bodies, astronomers developed several coordinate systems. These systems include altitude (alt)-azimuth […]

Journey of Modern Astronomy

By Arc Educators Astronomy is the oldest of all sciences! Ancient astronomy was mostly dependent on the empirical observations of celestial bodies and phenomena. It dates back to old civilizations -the Babylonians, Greeks, Indians, Egyptians, Chinese, Maya, and many indigenous people of America, few mentioned below:  Towards Modern Astronomy From the 6th century B.C., Greeks […]

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