Brace for the news this THUR (2/11/16). Whatever the outcome, it is set to be a milestone on the cosmic calendar. It has been 100 years since Einstein published his General Theory of Relativity that married Gravity to Space-Time. LIGO has measured the last of the predictions made by this theory, ie, the presence of ripples in space-time caused by rapidly spinning objects like pulsars, 2 star systems etc.. Detecting a gravitational wave is like noticing the Milky Way — which is about 100,000 light-years wide — has stretched or shrunk by the width of a pencil eraser.
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