https://bigthink.com/starts-with-a-bang/light-gravitational-waves-arrive/
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Light and gravitational waves don't arrive simultaneously - Big Think
10/26/23 at 6:00am
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Big Think
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Ethan Siegel
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In 2017, a kilonova sent light and gravitational waves across the Universe. Here on Earth, there was a 1.7 second signal arrival delay. Why?
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