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shared by Mars Base on 29 Aug 12 - No Cached

According to Einstein, space-time is a structure in itself
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also predicted that exceptionally massive, rapidly rotating objects — such as a white dwarf binary pair — would create outwardly-expanding ripples in space-time that would ultimately “steal” kinetic energy from the objects themselves. These gravitational waves would be very subtle, yet in theory, observable.
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Originally observed in 2011 eclipsing each other
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once every six minutes, the stars now eclipse six seconds sooner
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equates to a predicted orbital period reduction of about 0.25 milliseconds each year
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Although this isn’t “direct” observation of gravitational waves, it is evidence inferred by their predicted effects… akin to watching a floating lantern in a dark pond at night moving up and down and deducing that there are waves present
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Based on these measurements, by April 2013 the stars will be eclipsing each other 20 seconds sooner than first observed.
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shared by Mars Base on 30 Aug 12 - No Cached

A jackpot of previously unknown black holes across the universe has been discovered by the infrared eyes of a prolific NASA sky-mapping telescope
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astronomers are still poring through this celestrial trove for discoveries.
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These black holes aren't the average tiny, dense objects created by the collapse of dead stars, but rather humongous "supermassive" black holes that have been caught feasting on matter falling into them
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We expected that there should be this large population of hidden quasars in the universe, but WISE can now identify them across the sky
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