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Picture of the Day

self delete
 
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Dare to try?

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Started the day with a click,and ending with a hick!
 
Rare Picture... soldier guarding railway in Kashmir...

 
Yet Another APPLE IPHONE USER...MARKET EXPANDING LOL..


LOL he really is checking...
 
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The View Near a Black Hole


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In the center of a swirling whirlpool of hot gas is likely a beast that has never been seen directly: a black hole. Studies of the bright light emitted by the swirling gas frequently indicate not only that a black hole is present, but also likely attributes. The gas surrounding GRO J1655-40, for example, has been found to display an unusual flickering at a rate of 450 times a second. Given a previous mass estimate for the central object of seven times the mass of our Sun, the rate of the fast flickering can be explained by a black hole that is rotating very rapidly. What physical mechanisms actually cause the flickering -- and a slower quasi-periodic oscillation (QPO) -- in accretion disks surrounding black holes and neutron stars remains a topic of much research.
 

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