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tag:blogger.com,1999:blog-6378219532306514968.post-6618905556281145632: LIGO Detects Gravitational Waves
LIGO Laboratory News

Direct link LIGO Detects Gravitational Waves

11 Feb 2016, 17:18 UTC <div class="separator" style="clear: both; text-align: center;"><a href="https://4.bp.blogspot.com/-8i57bS5SLpM/VrzCTUshYmI/AAAAAAAAASQ/e3_yWAe0R_k/s1600/gw-localization.jpg" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" src="https://4.bp.blogspot.com/-8i57bS5SLpM/VrzCTUshYmI/AAAAAAAAASQ/e3_yWAe0R_k/s200/gw-localization.jpg" /></a></div>For the first time, scientists have observed ripples in the fabric of spacetime called gravitational waves. This confirms a major prediction of Albert Einstein's 1915 general theory of relativity and opens an unprecedented window onto the cosmos.<br /><br />Gravitational waves were detected by the two LIGO detectors in Hanford, Washington and Livingston, Louisiana, United States, at 5:51 am EDT (0951 UTC). The waves were generated during the final moments of the merger of 2 black holes resulting in a single, massive, rotating black hole. Even though such a merger was predicted to happen, it was never observed before.<br /><br />The merger of the two black holes happened more than 1 billion light-years away. (<a href="https://www.grc.nasa.gov/www/k-12/Numbers/Math/Mathematical_Thinking/how_long_is_a_light_year.htm">definition</a> of a light-year, use this <a href="http://www.calculateme.com/Astronomy/LightYears/ToMiles.htm">calculator</a> to convert light-years to miles.)<br /><br />Why is this discovery so important? Gravitational waves tell us a lot about their cataclysmic origins. They offer a unique way to look deep into the past and observe cosmic events that happened a very long time ago. Gravitational waves provide information about the nature of gravity that we wouldn't be able to get any ...
086DB66D-A4B0-42D5-BB70ACBC25B787B0: The Discovery of Gravitational Waves
Scientific American

Direct link The Discovery of Gravitational Waves

11 Feb 2016, 16:55 UTC

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