INSAT failure

SRIHARIKOTA: Launch of India's latest communication satellite GSAT-5P onboard homegrown GSLV-F06, powered by Russian cryogenic engine, failed (25.12.2010) when the rocket developed a snag soon after lift-off from the spaceport here.

Nicolaus Copernicus - February 19

Nicolaus Copernicus (19 February 1473 – 24 May 1543) was the first astronomer to formulate a comprehensive heliocentric cosmology, which displaced the Earth from the center of the universe.

Copernicus' epochal book, De revolutionibus orbium coelestium (On the Revolutions of the Celestial Spheres), published just before his death in 1543, is often regarded as the starting point of modern astronomy and the defining epiphany that began the scientific revolution. Hisheliocentric model, with the Sun at the center of the universe, demonstrated that the observed motions of celestial objects can be explained without putting Earth at rest in the center of the universe. His work stimulated further scientific investigations, becoming alandmark in the history of science that is often referred to as the Copernican Revolution.

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Galileo Galilei

Galileo Galilei was born in Pisa, Italy on February 15, 1564. Tomorrow his birthday. His father was a musician and wool trader, who wanted his son to study medicine. In 1581, at the age of 17, he entered the University of Pisa to study medicine, as his father wished. At age twenty, Galileo noticed a lamp swinging overhead while he was in a cathedral. Curious to find out how long it took the lamp to swing back and forth, he used his pulse to time large and small swings. Galileo discovered something that no one else had ever realized: the period of each swing was exactly the same. The law of the pendulum, which would eventually be used to regulate clocks, made Galileo Galilei instantly famous.

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