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The announcement included several major news headlines: Both gravitational waves and electromagnetic (light) signals were detected from the same source.The speed of gravitational waves is the same as the speed of light, as predicted by general relativity.The seconds-long gamma ray burst of electromagnetic waves was detected by the Fermi Gamma-Ray Space Telescope.Because a neutron star is extremely dense, with a mass similar to that of our Sun but a diameter of only a few miles, a gamma ray burst can contain as much energy as the Sun emits in a trillion years.Since then, three other detections of black hole mergers were made on December 26, 2015, January 4, 2017, and August 14, 2017.The last observation was made by the two LIGO detectors as well as by a third detector in Italy called Virgo.In the 1970s, indirect evidence for gravitational waves came from measuring the orbital period of binary neutron stars. As a result, the California Institute of Technology (Cal Tech) and the Massachusetts Institute of Technology (MIT) developed the Laser Interferometer Gravitational-Wave Observatory (LIGO) that can detect space-time oscillations that are thousands of times smaller than the nucleus of an atom.

The beings that co-exist with humanity are not simple resources.Additional information about gravitational waves and their detection can be found in: The first direct detection of gravitational waves occurred on September 14, 2015, when LIGO physically sensed distortions in space-time that lasted a fraction of a second.The passing gravitational waves were generated by two colliding black holes 1.3 billion light-years away.Dozens of other telescopes tracked the “afterglow” of the explosive neutron star merger at x-ray, ultraviolet, optical, infrared, and radio (electromagnetic light) wavelengths.The results were announced on October 16 and published in a paper with more than a thousand authors, including a Seventh-day Adventist physicist at Andrews University.

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