![LIGO on Twitter: "We infer the distance the amplitude of the signal. Louder signals mean closer sources. For more on how we work out the properties of a #GravitationalWave source, checkout this LIGO on Twitter: "We infer the distance the amplitude of the signal. Louder signals mean closer sources. For more on how we work out the properties of a #GravitationalWave source, checkout this](https://pbs.twimg.com/media/D30oCs4XkAMdRLJ.png)
LIGO on Twitter: "We infer the distance the amplitude of the signal. Louder signals mean closer sources. For more on how we work out the properties of a #GravitationalWave source, checkout this
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Galaxy NGC 7331, about 40 megalight-years (12 Mpc) away in the constellation Pegasus | Galaxy ngc, Galaxies, Astronomy pictures
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