LIGO resumes work in 2023 and will catch gravitational wave signals fainter than ever

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LIGO resumes work in 2023 and will catch gravitational wave signals fainter than ever
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The gravitational wave detector will be able to spot neutron star mergers as distant as 620 million light-years away.

Though the events that launch these ripples in space-time are tremendously powerful, gravitational waves are very faint — so faint, in fact, that Einstein predicted we would never directly detect them. We did end up spotting them, though, with theoccurring in September 2015. Now, the new improvements to LIGO boost its sensitivity, allowing it to detect fainter signals than ever before and, as a consequence, more events than was previously possible.

For this upcoming operating run, LIGO scientists are aiming for the instrument to be sensitive enough to detect gravitational waves from binary neutron star mergers as distant as 522 million to 620 million light-years from. Larger and more violent events, such as the collisions and mergers of black holes, should be visible to LIGO at even greater distances.

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