By Yasemin Saplakoglu – Staff Writer A mysterious cosmic event might have ever-so-slightly stretched and squeezed our planet last week. On Jan. 14, astronomers detected a split-second burst of gravitational waves, distortions in space-time … but researchers don’t know where this burst came from. The gravitational wave signal, picked up by the Laser Interferometer Gravitational-Wave Observatory (LIGO) and the […]