Authors: George Rajna
Why has the Leaning Tower of Pisa survived the strong earthquakes that have hit the region since the middle ages?  New insights into the properties of neutron stars have come from two independent analyses of gravitational waves from the GW170817 neutron-star merger.  Using data from the first-ever gravitational waves detected last year, along with a theoretical analysis, physicists have shown that gravitational waves may oscillate between two different forms called "g" and "f"-type gravitational waves.  Astronomy experiments could soon test an idea developed by Albert Einstein almost exactly a century ago, scientists say.  It’s estimated that 27% of all the matter in the universe is invisible, while everything from PB&J sandwiches to quasars accounts for just 4.9%. But a new theory of gravity proposed by theoretical physicist Erik Verlinde of the University of Amsterdam found out a way to dispense with the pesky stuff. 
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[v1] 2018-05-09 10:41:19
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