Direct Observation of Gravitational Waves: Educator's Guide: https://www.ligo.caltech.edu/system/media_files/binaries/303/original/ligo-educators-guide.pdf
* LIGO: Journey of a G-Wave: https://www.youtube.com/watch?v=FXlg3cr-q44
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* Direct Observation of Gravitational Waves: Educator's Guide: https://www.ligo.caltech.edu/system/media_files/binaries/303/original/ligo-educators-guide.pdf