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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LCROSS impact crater as viewed with near-infrared (NIR) and ultra violet/visible (UV/Vis) spectrometers. Credit NASA Ames.

At approximately 4:31 a.m. PDT on Oct. 9, 2009, the LCROSS Centaur impacted the surface of the Cabeus crater. From approximately 373 miles (600 km), the LCROSS Shepherding Spacecraft captured the impact flash with its instruments. The faint but distinct flash was only a few pixels wide in the LCROSS cameras and lasted only a brief moment but will yield valuable information about the composition of the material at the impact site.

Gullies at the Edge of Hale Crater, Mars

This image from NASA's Mars Reconnaissance Orbiter shows gullies near the edge of Hale crater on southern Mars.

Martian gullies carved into hill slopes and the walls of impact craters were discovered several years ago. On Earth, gullies usually form through the action of liquid water -- long thought to be absent on the Martian surface. Whether liquid water carves gullies under today's cold and dry conditions on Mars is a major question that planetary scientists are trying to answer.

Gullies at this site are especially interesting because scientists recently discovered actively changing examples at similar locations. Images separated by several years showed changes in the appearance of some of these gullies. Today, planetary scientists are using the HiRISE camera on MRO to examine gullies such as the one in this image for change that might provide a clue about whether liquid water occurs on the surface of Mars. The view covers an area about 1 kilometer, or 0.6 mile, across and was taken on Aug. 3, 2009.

Image Credit: NASA/JPL-Caltech/University of Arizona

Roll out - Soyuz Rocket

Russian security officers walk along the railroad tracks as the Soyuz rocket is rolled out to the launch pad Monday, Sept. 28, 2009 at the Baikonur Cosmodrome in Kazakhstan. The Soyuz is scheduled to launch the crew of Expedition 21 and a spaceflight participant on Sept. 30, 2009.

Image Credit: NASA/Bill Ingalls

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